<?xml version="1.0" encoding="utf-8" standalone="yes"?><html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>U</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
<meta content="text/css" http-equiv="Content-Style-Type" />
<script src="NED?action=retrieve&amp;identifier=dn00188761&amp;edition=1&amp;language=none&amp;coverage=global&amp;encoding=javascript&amp;component=data&amp;item=data" type="text/javascript" xml:space="preserve">
</script>
<?conversion name="Pub2XHTML" version="2.0" source="urn:mars:general_glossary:13:en:global:publishing_online_1_0:data:data:*:*:*" date="2005-02-25T10:33:46Z"?>
<link href="NED?action=retrieve&amp;identifier=dn01158124&amp;edition=1&amp;language=en&amp;coverage=global&amp;encoding=css&amp;component=data&amp;item=data" rel="stylesheet" title="Nokia Networks default online style" type="text/css" />
<meta content="approved" name="status" />
<?conversion name="SplitHTML" version="1.9" source="urn:mars:general_glossary:13:en:global:publishing_online_1_0:data:data:5:*:*" date="2005-02-25T10:33:46Z"?>
</head>
<body lang="en" xml:lang="en">
<p><a name="p2xhtm-repid-18606" shape="rect"></a>
<a name="ned_25" shape="rect"></a></p>

<div class="div">
<table width="100%">
<tr>
<td align="center" colspan="1" rowspan="1" width="20%"><?NED5 annotation?>
<br clear="none" /><?NED5 printview?>
</td>
<td align="center" colspan="1" rowspan="1" width="20%"><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=ned_24#ned_24" onclick="sync(this);return true" shape="rect">T</a></td>
<td align="center" colspan="1" rowspan="1" width="20%"><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=ned_26#ned_26" onclick="sync(this);return true" shape="rect">V</a></td>
<td align="center" colspan="1" rowspan="1" width="20%"></td>
<td align="center" colspan="1" rowspan="1" width="20%"><a href="NED?action=retrieve&amp;identifier=general_glossary_about&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=ned_top#ned_top" onclick="openSmallPopup(event,'NED?action=retrieve&amp;identifier=general_glossary_about&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=ned_top#ned_top');return false" shape="rect" target="_blank"><img alt="Document information" border="0" class="Metainfo" src="NED?action=retrieve&amp;identifier=dn01158003&amp;edition=1&amp;language=en&amp;coverage=global&amp;encoding=gif&amp;component=data&amp;item=data" /></a></td>
</tr>
</table>


<div class="div">
<h2>U</h2>

<a name="p2xhtm-repid-18607" shape="rect"></a>
<div class="topic">
<h3>U-CSI</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id013255#id013255" onclick="sync(this);return true" shape="rect">See USSD CAMEL subscription information</a></p>
</div>


<a name="id04066" shape="rect"></a>
<div class="topic">
<h3>U-interface</h3>

<p>interface between an ISDN network termination equipment (NT1) and the local exchange</p>
</div>


<a name="p2xhtm-repid-18609" shape="rect"></a>
<div class="topic">
<h3>U-plane</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010108#id010108" onclick="sync(this);return true" shape="rect">See user plane</a></p>
</div>


<a name="p2xhtm-repid-18610" shape="rect"></a>
<div class="topic">
<h3>U-RNTI</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012811#id012811" onclick="sync(this);return true" shape="rect">See UTRAN radio network temporary identifier</a></p>
</div>


<a name="p2xhtm-repid-18611" shape="rect"></a>
<div class="topic">
<h3>U-TDOA</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id019740#id019740" onclick="sync(this);return true" shape="rect">See uplink time difference of arrival</a></p>
</div>


<a name="p2xhtm-repid-18612" shape="rect"></a>
<div class="topic">
<h3>UA</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id016907#id016907" onclick="sync(this);return true" shape="rect">See user agent</a></p>
</div>


<a name="p2xhtm-repid-18613" shape="rect"></a>
<div class="topic">
<h3>UA</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id011329#id011329" onclick="sync(this);return true" shape="rect">See unnumbered acknowledge</a></p>
</div>


<a name="p2xhtm-repid-18614" shape="rect"></a>
<div class="topic">
<h3>UA frame</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id011329#id011329" onclick="sync(this);return true" shape="rect">See unnumbered acknowledge</a></p>
</div>


<a name="p2xhtm-repid-18615" shape="rect"></a>
<div class="topic">
<h3>UA-AD</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id017159#id017159" onclick="sync(this);return true" shape="rect">See unavailable - activation denied</a></p>
</div>


<a name="p2xhtm-repid-18616" shape="rect"></a>
<div class="topic">
<h3>UA-INS</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id017160#id017160" onclick="sync(this);return true" shape="rect">See unavailable - deactivated by system</a></p>
</div>


<a name="p2xhtm-repid-18617" shape="rect"></a>
<div class="topic">
<h3>UAC</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id014097#id014097" onclick="sync(this);return true" shape="rect">See user agent client</a></p>
</div>


<a name="p2xhtm-repid-18618" shape="rect"></a>
<div class="topic">
<h3>UAHeader</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id018211#id018211" onclick="sync(this);return true" shape="rect">See user agent header</a></p>
</div>


<a name="p2xhtm-repid-18619" shape="rect"></a>
<div class="topic">
<h3>UAN</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id05616#id05616" onclick="sync(this);return true" shape="rect">See universal access number</a></p>
</div>


<a name="p2xhtm-repid-18620" shape="rect"></a>
<div class="topic">
<h3>UAProfile</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id018212#id018212" onclick="sync(this);return true" shape="rect">See user agent profile</a></p>
</div>


<a name="p2xhtm-repid-18621" shape="rect"></a>
<div class="topic">
<h3>UART</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id08592#id08592" onclick="sync(this);return true" shape="rect">See universal asynchronous receiver/transmitter</a></p>
</div>


<a name="p2xhtm-repid-18622" shape="rect"></a>
<div class="topic">
<h3>UAS</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id08066#id08066" onclick="sync(this);return true" shape="rect">See unavailable seconds</a></p>
</div>


<a name="p2xhtm-repid-18623" shape="rect"></a>
<div class="topic">
<h3>UAT</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id08067#id08067" onclick="sync(this);return true" shape="rect">See unavailable time</a></p>
</div>


<a name="p2xhtm-repid-18624" shape="rect"></a>
<div class="topic">
<h3>UBR</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id09256#id09256" onclick="sync(this);return true" shape="rect">See unspecified bit rate</a></p>
</div>


<a name="p2xhtm-repid-18625" shape="rect"></a>
<div class="topic">
<h3>UCA</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id09186#id09186" onclick="sync(this);return true" shape="rect">See UCA charging record</a></p>
</div>


<a name="p2xhtm-repid-18626" shape="rect"></a>
<div class="topic">
<h3>UCA CDR</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id09186#id09186" onclick="sync(this);return true" shape="rect">See UCA charging record</a></p>
</div>


<a name="id09186" shape="rect"></a>
<div class="topic">
<h3>UCA charging record; <em>UCA CDR</em>; <em>UCA</em></h3>

<p>charging record which contains information of unsuccessful call attempts</p>
</div>


<a name="p2xhtm-repid-18628" shape="rect"></a>
<div class="topic">
<h3>UCD</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010802#id010802" onclick="sync(this);return true" shape="rect">See uniform call distribution</a></p>
</div>


<a name="p2xhtm-repid-18629" shape="rect"></a>
<div class="topic">
<h3>UCF</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id014361#id014361" onclick="sync(this);return true" shape="rect">See user equipment control function</a></p>
</div>


<a name="p2xhtm-repid-18630" shape="rect"></a>
<div class="topic">
<h3>UCIC</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012332#id012332" onclick="sync(this);return true" shape="rect">See unequipped circuit identification code message</a></p>
</div>


<a name="p2xhtm-repid-18631" shape="rect"></a>
<div class="topic">
<h3>UCP</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id016908#id016908" onclick="sync(this);return true" shape="rect">See user control part</a></p>
</div>


<a name="p2xhtm-repid-18632" shape="rect"></a>
<div class="topic">
<h3>UCP</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id016245#id016245" onclick="sync(this);return true" shape="rect">See universal computer protocol</a></p>
</div>


<a name="id018213" shape="rect"></a>
<div class="topic">
<h3>UCP gateway</h3>

<p>gateway that converts the universal computer protocol (UCP) operations from a UCP short message entity (SME) to CIMD2 operations and then sends them to the short message service centre (SMSC), or vice versa</p>
</div>


<a name="p2xhtm-repid-18634" shape="rect"></a>
<div class="topic">
<h3>UCS</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id019385#id019385" onclick="sync(this);return true" shape="rect">See user control server</a></p>
</div>


<a name="id018214" shape="rect"></a>
<div class="topic">
<h3>UCS-2; <em>UCS2</em></h3>

<p>Unicode standard character set which uses a single code value between 0 and 65535 for each character, and allows that value to be represented as two bytes (one 16-bit word)</p>
</div>


<a name="p2xhtm-repid-18636" shape="rect"></a>
<div class="topic">
<h3>UCS2</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id018214#id018214" onclick="sync(this);return true" shape="rect">See UCS-2</a></p>
</div>


<a name="p2xhtm-repid-18637" shape="rect"></a>
<div class="topic">
<h3>UD</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010107#id010107" onclick="sync(this);return true" shape="rect">See undefined build</a></p>
</div>


<a name="p2xhtm-repid-18638" shape="rect"></a>
<div class="topic">
<h3>UDCP</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id016821#id016821" onclick="sync(this);return true" shape="rect">See USSD dialogue control protocol</a></p>
</div>


<a name="p2xhtm-repid-18639" shape="rect"></a>
<div class="topic">
<h3>UDD</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id014272#id014272" onclick="sync(this);return true" shape="rect">See unconstrained delay data</a></p>
</div>


<a name="p2xhtm-repid-18640" shape="rect"></a>
<div class="topic">
<h3>UDF</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id09922#id09922" onclick="sync(this);return true" shape="rect">See universal disk format</a></p>
</div>


<a name="p2xhtm-repid-18641" shape="rect"></a>
<div class="topic">
<h3>UDH</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id016822#id016822" onclick="sync(this);return true" shape="rect">See user data header</a></p>
</div>


<a name="p2xhtm-repid-18642" shape="rect"></a>
<div class="topic">
<h3>UDHL</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id016823#id016823" onclick="sync(this);return true" shape="rect">See user data header length</a></p>
</div>


<a name="p2xhtm-repid-18643" shape="rect"></a>
<div class="topic">
<h3>UDI</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id06811#id06811" onclick="sync(this);return true" shape="rect">See unrestricted digital information service</a></p>
</div>


<a name="p2xhtm-repid-18644" shape="rect"></a>
<div class="topic">
<h3>UDI-TA</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012727#id012727" onclick="sync(this);return true" shape="rect">See unrestricted digital information with tones and announcements service</a></p>
</div>


<a name="p2xhtm-repid-18645" shape="rect"></a>
<div class="topic">
<h3>UDL</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id016824#id016824" onclick="sync(this);return true" shape="rect">See user data length</a></p>
</div>


<a name="p2xhtm-repid-18646" shape="rect"></a>
<div class="topic">
<h3>UDP</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id06081#id06081" onclick="sync(this);return true" shape="rect">See user datagram protocol</a></p>
</div>


<a name="id019786" shape="rect"></a>
<div class="topic">
<h3>UDP CIR</h3>

<p>connection initiation request that uses the user datagram protocol/Internet protocol (UDP/IP) as the communication method</p>
</div>


<a name="p2xhtm-repid-18648" shape="rect"></a>
<div class="topic">
<h3>UDPR</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id016825#id016825" onclick="sync(this);return true" shape="rect">See user data prefixing</a></p>
</div>


<a name="p2xhtm-repid-18649" shape="rect"></a>
<div class="topic">
<h3>UDR</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id05607#id05607" onclick="sync(this);return true" shape="rect">See user-defined routing</a></p>
</div>


<a name="p2xhtm-repid-18650" shape="rect"></a>
<div class="topic">
<h3>UDT</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id04740#id04740" onclick="sync(this);return true" shape="rect">See unitdata</a></p>
</div>


<a name="p2xhtm-repid-18651" shape="rect"></a>
<div class="topic">
<h3>UDTS</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id015937#id015937" onclick="sync(this);return true" shape="rect">See unitdata service</a></p>
</div>


<a name="p2xhtm-repid-18652" shape="rect"></a>
<div class="topic">
<h3>UDUB</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id04263#id04263" onclick="sync(this);return true" shape="rect">See user determined user busy</a></p>
</div>


<a name="p2xhtm-repid-18653" shape="rect"></a>
<div class="topic">
<h3>UE</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id011489#id011489" onclick="sync(this);return true" shape="rect">See user equipment</a></p>
</div>


<a name="p2xhtm-repid-18654" shape="rect"></a>
<div class="topic">
<h3>UE</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012666#id012666" onclick="sync(this);return true" shape="rect">See 3G user equipment</a></p>
</div>


<a name="p2xhtm-repid-18655" shape="rect"></a>
<div class="topic">
<h3>UE control function</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id014361#id014361" onclick="sync(this);return true" shape="rect">See user equipment control function</a></p>
</div>


<a name="id012812" shape="rect"></a>
<div class="topic">
<h3>UE service capabilities; <em>mobile station service capabilities</em>; <em>USC</em></h3>

<p>service capabilities that can be used either singly or in combination to deliver services to a mobile station (MS)</p>
</div>


<a name="id021035" shape="rect"></a>
<div class="topic">
<h3>UE-based network-assisted GPS</h3>

<p>assisted GPS in which the user equipment (UE) acts as a full GPS receiver and carries out the location calculation</p>
</div>


<a name="id012667" shape="rect"></a>
<div class="topic">
<h3>UE/MS</h3>

<p>terminal that supports a UMTS subscriber identity module (USIM), subscriber identity module (SIM), the Uu interface and the Um interface, with the USIM and SIM inserted</p>
</div>


<a name="p2xhtm-repid-18659" shape="rect"></a>
<div class="topic">
<h3>UEA</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012668#id012668" onclick="sync(this);return true" shape="rect">See UMTS encryption algorithm</a></p>
</div>


<a name="p2xhtm-repid-18660" shape="rect"></a>
<div class="topic">
<h3>UFI</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id06387#id06387" onclick="sync(this);return true" shape="rect">See upstream failure indication</a></p>
</div>


<a name="p2xhtm-repid-18661" shape="rect"></a>
<div class="topic">
<h3>UFS</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010515#id010515" onclick="sync(this);return true" shape="rect">See UNIX file system</a></p>
</div>


<a name="p2xhtm-repid-18662" shape="rect"></a>
<div class="topic">
<h3>UG-CSI</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id013256#id013256" onclick="sync(this);return true" shape="rect">See USSD general CAMEL service information</a></p>
</div>


<a name="p2xhtm-repid-18663" shape="rect"></a>
<div class="topic">
<h3>UGL</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id011330#id011330" onclick="sync(this);return true" shape="rect">See update GPRS location</a></p>
</div>


<a name="p2xhtm-repid-18664" shape="rect"></a>
<div class="topic">
<h3>UI</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id011131#id011131" onclick="sync(this);return true" shape="rect">See unnumbered information frame</a></p>
</div>


<a name="p2xhtm-repid-18665" shape="rect"></a>
<div class="topic">
<h3>UI</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id01220#id01220" onclick="sync(this);return true" shape="rect">See user interface</a></p>
</div>


<a name="p2xhtm-repid-18666" shape="rect"></a>
<div class="topic">
<h3>UI</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id02965#id02965" onclick="sync(this);return true" shape="rect">See unit interval</a></p>
</div>


<a name="id019827" shape="rect"></a>
<div class="topic">
<h3>UI control; <em>control</em></h3>

<p>graphical user interface component that enables user interaction and represents properties or operations of an object</p>
</div>


<a name="p2xhtm-repid-18668" shape="rect"></a>
<div class="topic">
<h3>UI frame</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id011328#id011328" onclick="sync(this);return true" shape="rect">See unconfirmed information frame</a></p>
</div>


<a name="id019200" shape="rect"></a>
<div class="topic">
<h3>UI layer; <em>presentation layer</em></h3>

<p>WAP push layer that contains the Java server pages (JSP) that are displayed on the user's terminal.</p>
</div>


<a name="id020980" shape="rect"></a>
<div class="topic">
<h3>UI manager</h3>

<p>software which controls the external user interfaces of a system</p>
</div>


<a name="p2xhtm-repid-18671" shape="rect"></a>
<div class="topic">
<h3>UIA</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012669#id012669" onclick="sync(this);return true" shape="rect">See UMTS integrity protection algorithm</a></p>
</div>


<a name="id012330" shape="rect"></a>
<div class="topic">
<h3>UID action indicator</h3>

<p>signalling parameter sent in the backward direction to instruct preceding exchanges to allow a user interactive dialogue (UID) to occur</p>
</div>


<a name="id012331" shape="rect"></a>
<div class="topic">
<h3>UID capability indicator</h3>

<p>signalling parameter sent in the forward direction to inform succeeding exchanges that on request a user interactive dialogue (UID) is possible</p>
</div>


<a name="id014452" shape="rect"></a>
<div class="topic">
<h3>UIKON</h3>

<p>graphical user interface (UI) library for reference design (DFRD) independent functions based on EIKON</p>
</div>


<a name="p2xhtm-repid-18675" shape="rect"></a>
<div class="topic">
<h3>UIMI</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id014914#id014914" onclick="sync(this);return true" shape="rect">See user-initiated modification indication</a></p>
</div>


<a name="p2xhtm-repid-18676" shape="rect"></a>
<div class="topic">
<h3>UL</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id05016#id05016" onclick="sync(this);return true" shape="rect">See uplink</a></p>
</div>


<a name="p2xhtm-repid-18677" shape="rect"></a>
<div class="topic">
<h3>ULP</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id013469#id013469" onclick="sync(this);return true" shape="rect">See SCTP user application</a></p>
</div>


<a name="p2xhtm-repid-18678" shape="rect"></a>
<div class="topic">
<h3>ultralight family</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id09600#id09600" onclick="sync(this);return true" shape="rect">See ultralightweight family</a></p>
</div>


<a name="id09600" shape="rect"></a>
<div class="topic">
<h3>ultralightweight family; <em>ultralight family</em></h3>

<p>lightweight family in which data areas for all hands are not pre-allocated but taken into use as needed</p>
</div>


<a name="p2xhtm-repid-18680" shape="rect"></a>
<div class="topic">
<h3>UM</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id014279#id014279" onclick="sync(this);return true" shape="rect">See unacknowledged mode</a></p>
</div>


<a name="p2xhtm-repid-18681" shape="rect"></a>
<div class="topic">
<h3>Um</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id08955#id08955" onclick="sync(this);return true" shape="rect">See Um interface</a></p>
</div>


<a name="id08955" shape="rect"></a>
<div class="topic">
<h3>Um interface; <em>Um</em></h3>

<p>access interface for mobile station to the GPRS network</p>
</div>


<a name="p2xhtm-repid-18683" shape="rect"></a>
<div class="topic">
<h3>UMA</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id016461#id016461" onclick="sync(this);return true" shape="rect">See unified mediation and adaptation layer</a></p>
</div>


<a name="p2xhtm-repid-18684" shape="rect"></a>
<div class="topic">
<h3>UMA</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id019401#id019401" onclick="sync(this);return true" shape="rect">See URL mapper</a></p>
</div>


<a name="p2xhtm-repid-18685" shape="rect"></a>
<div class="topic">
<h3>UMA</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id021189#id021189" onclick="sync(this);return true" shape="rect">See unlicensed mobile access</a></p>
</div>


<a name="p2xhtm-repid-18686" shape="rect"></a>
<div class="topic">
<h3>umbrella</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id04027#id04027" onclick="sync(this);return true" shape="rect">See umbrella cell</a></p>
</div>


<a name="id04027" shape="rect"></a>
<div class="topic">
<h3>umbrella cell; <em>umbrella</em></h3>

<p>cell covering one or several small and micro cells and the areas between them</p>
</div>


<a name="p2xhtm-repid-18688" shape="rect"></a>
<div class="topic">
<h3>umbrella cell</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id05249#id05249" onclick="sync(this);return true" shape="rect">See macro cell</a></p>
</div>


<a name="id09023" shape="rect"></a>
<div class="topic">
<h3>umbrella handover</h3>

<p>handover procedure which enables network-directed traffic control between macro and micro cells</p>
</div>


<a name="p2xhtm-repid-18690" shape="rect"></a>
<div class="topic">
<h3>UML</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id014280#id014280" onclick="sync(this);return true" shape="rect">See unified modelling language</a></p>
</div>


<a name="p2xhtm-repid-18691" shape="rect"></a>
<div class="topic">
<h3>UMS</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id014098#id014098" onclick="sync(this);return true" shape="rect">See user mobility server</a></p>
</div>


<a name="id017018" shape="rect"></a>
<div class="topic">
<h3>UMS farm</h3>

<p>multi-site-level replication method in which the subscribers' data are replicated from one user mobility server (UMS) to another</p>
</div>


<a name="p2xhtm-repid-18693" shape="rect"></a>
<div class="topic">
<h3>UMTS</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id05524#id05524" onclick="sync(this);return true" shape="rect">See Universal Mobile Telecommunications System</a></p>
</div>


<a name="id020542" shape="rect"></a>
<div class="topic">
<h3>UMTS adaptive multi-rate codec 2; <em>adaptive multi-rate narrowband</em>; <em>UMTS AMR2</em>; <em>AMR NB</em></h3>

<p>codec which is specified for the Universal Mobile Telecommunications System (UMTS) and is made compatible with GSM AMR codecs by changing the mode change operation</p>
</div>


<a name="p2xhtm-repid-18695" shape="rect"></a>
<div class="topic">
<h3>UMTS AMR2</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id020542#id020542" onclick="sync(this);return true" shape="rect">See UMTS adaptive multi-rate codec 2</a></p>
</div>


<a name="id012814" shape="rect"></a>
<div class="topic">
<h3>UMTS coverage; <em>UMTS coverage area</em></h3>

<p>area where mobile cellular services are provided in accordance with UMTS standards</p>
</div>


<a name="p2xhtm-repid-18697" shape="rect"></a>
<div class="topic">
<h3>UMTS coverage area</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012814#id012814" onclick="sync(this);return true" shape="rect">See UMTS coverage</a></p>
</div>


<a name="id012668" shape="rect"></a>
<div class="topic">
<h3>UMTS encryption algorithm; <em>UEA</em></h3>

<p>cryptographic algorithm of a 3G system, implemented both in the 3G user equipment and in the radio network controller</p>
</div>


<a name="p2xhtm-repid-18699" shape="rect"></a>
<div class="topic">
<h3>UMTS integrity algorithm</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012669#id012669" onclick="sync(this);return true" shape="rect">See UMTS integrity protection algorithm</a></p>
</div>


<a name="id012669" shape="rect"></a>
<div class="topic">
<h3>UMTS integrity protection algorithm; <em>UMTS integrity algorithm</em>; <em>UIA</em></h3>

<p>algorithm, implemented in the UMTS subscriber identity module (USIM) and in the radio network controller, used with an integrity key to compute a message authentication code for a given message</p>
</div>


<a name="id012670" shape="rect"></a>
<div class="topic">
<h3>UMTS security context</h3>

<p>state that is established between a user and a serving network domain as a result of the execution of a UMTS authentication and key agreement (AKA)</p>
</div>


<a name="id010176" shape="rect"></a>
<div class="topic">
<h3>UMTS subscriber identity module; <em>universal subscriber identity module</em>; <em>user services identity module</em>; <em>USIM</em></h3>

<p>secure module within the 3rd generation mobile station, which uniquely identifies the user</p>
</div>


<a name="id010828" shape="rect"></a>
<div class="topic">
<h3>UMTS terrestrial radio access; <em>universal terrestrial radio access</em>; <em>UTRA</em></h3>

<p>radio access part of a third generation mobile system such as UMTS</p>
</div>


<a name="id010144" shape="rect"></a>
<div class="topic">
<h3>UMTS terrestrial radio access network; <em>universal terrestrial radio access network</em>; <em>UTRAN</em></h3>

<p>radio access network (RAN) which consists of radio network controllers (RNC) and base transceiver stations (BTS) and which is located between the Iu interface and the wideband code division multiple access (WCDMA) radio interface</p>
</div>


<a name="p2xhtm-repid-18705" shape="rect"></a>
<div class="topic">
<h3>UN</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id0433#id0433" onclick="sync(this);return true" shape="rect">See unallocated number</a></p>
</div>


<a name="p2xhtm-repid-18706" shape="rect"></a>
<div class="topic">
<h3>unacknowledged information frame</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id011328#id011328" onclick="sync(this);return true" shape="rect">See unconfirmed information frame</a></p>
</div>


<a name="id014279" shape="rect"></a>
<div class="topic">
<h3>unacknowledged mode; <em>UM</em></h3>

<p>radio link control mode in which upper layer segmentation is maintained but retransmissions are not used</p>
</div>


<a name="id013495" shape="rect"></a>
<div class="topic">
<h3>unacknowledged TSN</h3>

<p>transmission sequence number (TSN) and the associated data chunk which the endpoint has received but for which it has not yet sent an acknowledgement</p>
</div>


<a name="id0433" shape="rect"></a>
<div class="topic">
<h3>unallocated number; <em>UN</em></h3>

<p>receipt of a called subscriber number which is one of the numbers defined for that exchange but is not in use</p>
</div>


<a name="id0379" shape="rect"></a>
<div class="topic">
<h3>unassigned number</h3>

<p>dialling which is received from an incoming circuit and which has no defined routing</p>
</div>


<a name="id017159" shape="rect"></a>
<div class="topic">
<h3>unavailable - activation denied; <em>UA-AD</em></h3>

<p>state of a signalling link when the operator has deactivated the link and denied the activation</p>
</div>


<a name="id017160" shape="rect"></a>
<div class="topic">
<h3>unavailable - deactivated by system; <em>UA-INS</em></h3>

<p>state of a signalling link when the system has deactivated the link</p>
</div>


<a name="id08066" shape="rect"></a>
<div class="topic">
<h3>unavailable seconds; <em>UAS</em></h3>

<p>number of seconds that the errors could not be measured because of the system being unavailable due to, for example, loss of the signal or some other major event</p>
</div>


<a name="id08067" shape="rect"></a>
<div class="topic">
<h3>unavailable time; <em>UAT</em></h3>

<p>period that begins when there are ten consecutive unavailable seconds</p>
</div>


<a name="id07405" shape="rect"></a>
<div class="topic">
<h3>unbalanced metallic circuit</h3>

<p>circuit, between two points, composed of a pair of metallic conductors and associated terminations, with the whole having different impedances from each conductor to earth and to other circuits</p>
</div>


<a name="p2xhtm-repid-18716" shape="rect"></a>
<div class="topic">
<h3>unbalanced transmission line</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id07405#id07405" onclick="sync(this);return true" shape="rect">See unbalanced metallic circuit</a></p>
</div>


<a name="id01105" shape="rect"></a>
<div class="topic">
<h3>unblocking</h3>

<p>restoring into use a circuit of a switched trunk circuit group in the incoming direction</p>
</div>


<a name="id014636" shape="rect"></a>
<div class="topic">
<h3>uncommitted read; <em>read uncommitted</em>; <em>dirty read</em></h3>

<p>isolation level that allows a record to be read, even if it has not been committed</p>
</div>


<a name="id04583" shape="rect"></a>
<div class="topic">
<h3>unconditional call forwarding; <em>unconditional call forwarding to any number</em>; <em>call forwarding unconditional</em>; <em>call forwarding unconditional to any number</em>; <em>immediate call diversion</em>; <em>absent subscriber service - immediate diversion to any number</em>; <em>absent subscriber service with immediate diversion to any number</em>; <em>CFU</em></h3>

<p>call forwarding that allows a user to have the network forward all incoming calls to any other number given by the user</p>
</div>


<a name="p2xhtm-repid-18720" shape="rect"></a>
<div class="topic">
<h3>unconditional call forwarding to any number</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id04583#id04583" onclick="sync(this);return true" shape="rect">See unconditional call forwarding</a></p>
</div>


<a name="id07765" shape="rect"></a>
<div class="topic">
<h3>unconditional cross-connection</h3>

<p>cross-connection with no conditions attached to it</p>
</div>


<a name="id07766" shape="rect"></a>
<div class="topic">
<h3>unconditional cross-connection table</h3>

<p>cross-connection table with no conditions attached to it</p>
</div>


<a name="id011328" shape="rect"></a>
<div class="topic">
<h3>unconfirmed information frame; <em>unacknowledged information frame</em>; <em>UI frame</em></h3>

<p>frame used for unconfirmed information transfer</p>
</div>


<a name="id014272" shape="rect"></a>
<div class="topic">
<h3>unconstrained delay data; <em>UDD</em></h3>

<p>data transferred by unconstrained delay bearer services in which there is no guaranteed provided bit rate defined by the quality of service (QoS) requirements</p>
</div>


<a name="id0480" shape="rect"></a>
<div class="topic">
<h3>uncontrolled slip; <em>slip</em></h3>

<p>loss or gain of a digit position or a set of consecutive digit positions in a digital signal resulting from an aberration of the timing process associated with transmission or switching of a digital signal, and in which either the magnitude or the instant of that loss or gain is not controlled</p>
</div>


<a name="id04197" shape="rect"></a>
<div class="topic">
<h3>undefined</h3>

<p>value of a variable that has not yet been assigned any specific value</p>
</div>


<a name="id010107" shape="rect"></a>
<div class="topic">
<h3>undefined build; <em>UD</em></h3>

<p>software build without a name which is stored on a disk but has not been created</p>
</div>


<a name="id010514" shape="rect"></a>
<div class="topic">
<h3>undefined carrier access code; <em>CACU</em></h3>

<p>carrier access code that indicates the used network or operator for national long distance traffic or international traffic</p>
</div>


<a name="id013533" shape="rect"></a>
<div class="topic">
<h3>undulation</h3>

<p>single diffraction due to terrain curvatures</p>
</div>


<a name="id017196" shape="rect"></a>
<div class="topic">
<h3>unequipped and transient conditions</h3>

<p>category of circuit states that consists of states where the circuit is not available (unequipped), and any transient call processing or maintenance states</p>
</div>


<a name="id012332" shape="rect"></a>
<div class="topic">
<h3>unequipped circuit identification code message; <em>UCIC</em></h3>

<p>signalling message that an exchange sends as a response to the initial address message, continuity check request message, circuit supervision message, or circuit group supervision message on which it is unable to act as a consequence of its inability to perform a circuit identification code translation</p>
</div>


<a name="id06160" shape="rect"></a>
<div class="topic">
<h3>unfaded condition; <em>non-faded condition</em></h3>

<p>condition of normal reception when a good, strong signal, that is, an unfaded signal, is received</p>
</div>


<a name="p2xhtm-repid-18733" shape="rect"></a>
<div class="topic">
<h3>UNI</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id03154#id03154" onclick="sync(this);return true" shape="rect">See user-network interface</a></p>
</div>


<a name="id09795" shape="rect"></a>
<div class="topic">
<h3>UNI signalling</h3>

<p>signalling for establishing, maintaining, and releasing switched ATM virtual channel connections through an ATM network</p>
</div>


<a name="p2xhtm-repid-18735" shape="rect"></a>
<div class="topic">
<h3>unicast</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id09257#id09257" onclick="sync(this);return true" shape="rect">See unicasting</a></p>
</div>


<a name="id015749" shape="rect"></a>
<div class="topic">
<h3>unicast address</h3>

<p>address identifying a single interface</p>
</div>


<a name="id09257" shape="rect"></a>
<div class="topic">
<h3>unicasting; <em>unicast</em></h3>

<p>unidirectional transmission of data between a single sender and a single receiver</p>
</div>


<a name="id014150" shape="rect"></a>
<div class="topic">
<h3>Unicode</h3>

<p>universal character encoding standard used for the representation of text for computer processing</p>
</div>


<a name="id019769" shape="rect"></a>
<div class="topic">
<h3>Unicode support</h3>

<p>optional feature that allows the service provider to provide services in a range of different languages, using different character sets</p>
</div>


<a name="id014152" shape="rect"></a>
<div class="topic">
<h3>Unicode transformation format; <em>UTF</em></h3>

<p>character encoding standard that defines not only the identity of each character and its numeric value, or code position, but also how the character is represented in bits</p>
</div>


<a name="id03444" shape="rect"></a>
<div class="topic">
<h3>unidirectional</h3>

<p>qualification which implies that the transmission of information always occurs in one direction</p>
</div>


<a name="id016461" shape="rect"></a>
<div class="topic">
<h3>unified mediation and adaptation layer; <em>UMA</em></h3>

<p>functions within the Nokia NetAct Framework which hide the different technologies used in the network from the NetAct applications</p>
</div>


<a name="id012035" shape="rect"></a>
<div class="topic">
<h3>unified messaging</h3>

<p>seamless integration of messaging services</p>
</div>


<a name="id014280" shape="rect"></a>
<div class="topic">
<h3>unified modelling language; <em>UML</em></h3>

<p>open standard adopted by the object management group (OMG), describing a graphical notation for the representation of conceptual models using the object-oriented paradigm</p>
</div>


<a name="id010802" shape="rect"></a>
<div class="topic">
<h3>uniform call distribution; <em>UCD</em></h3>

<p>supplementary service which allows incoming calls to be distributed between a group of agents that are active</p>
</div>


<a name="p2xhtm-repid-18746" shape="rect"></a>
<div class="topic">
<h3>uniform distribution - free for longest time</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id05108#id05108" onclick="sync(this);return true" shape="rect">See uniform hunting</a></p>
</div>


<a name="p2xhtm-repid-18747" shape="rect"></a>
<div class="topic">
<h3>uniform distribution - random</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id03791#id03791" onclick="sync(this);return true" shape="rect">See random hunting</a></p>
</div>


<a name="id0730" shape="rect"></a>
<div class="topic">
<h3>uniform encoding</h3>

<p>generation of code words to represent uniformly quantised values</p>
</div>


<a name="id05108" shape="rect"></a>
<div class="topic">
<h3>uniform hunting; <em>uniform distribution - free for longest time</em></h3>

<p>hunting where the access being free for the longest time is selected</p>
</div>


<a name="id0731" shape="rect"></a>
<div class="topic">
<h3>uniform quantising; <em>uniform quantizing /US/</em></h3>

<p>quantising in which all the quantising intervals lying entirely with the working range are equal</p>
</div>


<a name="p2xhtm-repid-18751" shape="rect"></a>
<div class="topic">
<h3>uniform quantizing /US/</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id0731#id0731" onclick="sync(this);return true" shape="rect">See uniform quantising</a></p>
</div>


<a name="p2xhtm-repid-18752" shape="rect"></a>
<div class="topic">
<h3>uniform random noise</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id01790#id01790" onclick="sync(this);return true" shape="rect">See white noise</a></p>
</div>


<a name="id014281" shape="rect"></a>
<div class="topic">
<h3>uniform resource identifier; <em>URI</em></h3>

<p>compact string of characters for identifying an abstract or physical resource</p>
</div>


<a name="p2xhtm-repid-18754" shape="rect"></a>
<div class="topic">
<h3>uniform resource locator</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010343#id010343" onclick="sync(this);return true" shape="rect">See URL address</a></p>
</div>


<a name="id0852" shape="rect"></a>
<div class="topic">
<h3>unilateral control</h3>

<p>control between two synchronisation nodes such that the frequency of the clock of only one of these nodes is influenced by timing information derived from the clock of the other node</p>
</div>


<a name="id02347" shape="rect"></a>
<div class="topic">
<h3>unintelligible crosstalk</h3>

<p>crosstalk that gives rise to unintelligible sounds</p>
</div>


<a name="id04246" shape="rect"></a>
<div class="topic">
<h3>union</h3>

<p>predefined type generator which can contain several values of different types, only one of which can be in use at a time</p>
</div>


<a name="id011130" shape="rect"></a>
<div class="topic">
<h3>unit address</h3>

<p>computer unit's address which is used for communication between different units</p>
</div>


<a name="id019080" shape="rect"></a>
<div class="topic">
<h3>unit administration</h3>

<p>command class which includes commands for handling tests that are carried out in different units in the system</p>
</div>


<a name="id02965" shape="rect"></a>
<div class="topic">
<h3>unit interval; <em>UI</em></h3>

<p>nominal difference in time between consecutive significant instants of an isochronous signal</p>
</div>


<a name="p2xhtm-repid-18761" shape="rect"></a>
<div class="topic">
<h3>unit load measurement</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id015177#id015177" onclick="sync(this);return true" shape="rect">See load measurement</a></p>
</div>


<a name="id08797" shape="rect"></a>
<div class="topic">
<h3>unit restart reporting</h3>

<p>part of field reporting which produces reports on the disturbances followed by restart in the different parts of the system</p>
</div>


<a name="id020954" shape="rect"></a>
<div class="topic">
<h3>unit start-up</h3>

<p>part of system start-up that concerns a single computer unit</p>
</div>


<a name="p2xhtm-repid-18764" shape="rect"></a>
<div class="topic">
<h3>unit startup</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id020954#id020954" onclick="sync(this);return true" shape="rect">See unit start-up</a></p>
</div>


<a name="id03327" shape="rect"></a>
<div class="topic">
<h3>unit state administration</h3>

<p>functions in the environment of a functional unit, which the recovery system has to modify to change the working state of the functional unit that is recovered</p>
</div>


<a name="id04740" shape="rect"></a>
<div class="topic">
<h3>unitdata; <em>UDT</em></h3>

<p>message which does not include optional parameters, used in the signalling connection control part (SCCP) connectionless service to transfer data</p>
</div>


<a name="id015937" shape="rect"></a>
<div class="topic">
<h3>unitdata service; <em>UDTS</em></h3>

<p>message used in the signalling connection control part (SCCP) connectionless service to return a unitdata (UDT) message which cannot be delivered to its destination</p>
</div>


<a name="id05616" shape="rect"></a>
<div class="topic">
<h3>universal access number; <em>UAN</em></h3>

<p>IN service feature which allows a subscriber with several terminating lines in any number of locations or zones to be reached with a unique directory number. The subscriber may specify which incoming calls are to be routed to which terminating lines, based upon the area the calls originate.</p>
</div>


<a name="id011959" shape="rect"></a>
<div class="topic">
<h3>universal access service</h3>

<p>service type which applies to calls to special rate numbers</p>
</div>


<a name="p2xhtm-repid-18770" shape="rect"></a>
<div class="topic">
<h3>universal asynchronous receiver and transmitter</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id08592#id08592" onclick="sync(this);return true" shape="rect">See universal asynchronous receiver/transmitter</a></p>
</div>


<a name="id08592" shape="rect"></a>
<div class="topic">
<h3>universal asynchronous receiver/transmitter; <em>universal asynchronous receiver and transmitter</em>; <em>UART</em></h3>

<p>communications circuit that connects parallel information to an asynchronous serial bit stream and serial information to a parallel byte format</p>
</div>


<a name="id016245" shape="rect"></a>
<div class="topic">
<h3>universal computer protocol; <em>UCP</em></h3>

<p>protocol defined by the Computer Measurement Group (CMG) and used between the short message service centre (SMSC) and other computer systems and applications</p>
</div>


<a name="id09922" shape="rect"></a>
<div class="topic">
<h3>universal disk format; <em>UDF</em></h3>

<p>file system endorsed and approved by the Optical Storage Technologies Association (OSTA) that takes advantage of packet writing</p>
</div>


<a name="id05524" shape="rect"></a>
<div class="topic">
<h3>Universal Mobile Telecommunications System; <em>UMTS</em></h3>

<p>European 3rd generation mobile communication system based on WCDMA and standardised by ETSI</p>
</div>


<a name="id05597" shape="rect"></a>
<div class="topic">
<h3>universal personal telecommunication number; <em>UPT number</em>; <em>UPTN</em></h3>

<p>number that uniquely identifies a UPT user and is used to place or forward a call to that user</p>
</div>


<a name="id05520" shape="rect"></a>
<div class="topic">
<h3>universal personal telecommunications; <em>UPT</em></h3>

<p>telecommunications service which provides personal mobility by enabling a user to initiate any type of service and receive any type of call, on the basis of unique and personal, network-independent number, across multiple networks, at any user-network access (fixed, movable or mobile) irrespective of geographic location, limited only by terminal and network capabilities</p>
</div>


<a name="p2xhtm-repid-18777" shape="rect"></a>
<div class="topic">
<h3>universal resource locator</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010343#id010343" onclick="sync(this);return true" shape="rect">See URL address</a></p>
</div>


<a name="p2xhtm-repid-18778" shape="rect"></a>
<div class="topic">
<h3>universal subscriber identity module</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010176#id010176" onclick="sync(this);return true" shape="rect">See UMTS subscriber identity module</a></p>
</div>


<a name="p2xhtm-repid-18779" shape="rect"></a>
<div class="topic">
<h3>universal terrestrial radio access</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010828#id010828" onclick="sync(this);return true" shape="rect">See UMTS terrestrial radio access</a></p>
</div>


<a name="p2xhtm-repid-18780" shape="rect"></a>
<div class="topic">
<h3>universal terrestrial radio access network</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010144#id010144" onclick="sync(this);return true" shape="rect">See UMTS terrestrial radio access network</a></p>
</div>


<a name="id09798" shape="rect"></a>
<div class="topic">
<h3>universal test &amp; operations interface for ATM; <em>UTOPIA</em></h3>

<p>electrical interface between the transmission convergence (TC) and physical medium-dependent (PMD) sublayers of the physical layer (PHY)</p>
</div>


<a name="p2xhtm-repid-18782" shape="rect"></a>
<div class="topic">
<h3>Unix</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id021241#id021241" onclick="sync(this);return true" shape="rect">See UNIX operating system</a></p>
</div>


<a name="id010515" shape="rect"></a>
<div class="topic">
<h3>UNIX file system; <em>UFS</em></h3>

<p>file system which is organised as a hierarchy of directories starting from a single root directory</p>
</div>


<a name="id021241" shape="rect"></a>
<div class="topic">
<h3>UNIX operating system; <em>Unix operating system</em>; <em>UNIX™</em>; <em>Unix</em></h3>

<p>time-sharing general-purpose operating system that was originally developed by Ken Thompson and Dennis Ritchie at the AT&amp;T Bell Laboratories</p>
</div>


<a name="p2xhtm-repid-18785" shape="rect"></a>
<div class="topic">
<h3>Unix operating system</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id021241#id021241" onclick="sync(this);return true" shape="rect">See UNIX operating system</a></p>
</div>


<a name="p2xhtm-repid-18786" shape="rect"></a>
<div class="topic">
<h3>UNIX™</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id021241#id021241" onclick="sync(this);return true" shape="rect">See UNIX operating system</a></p>
</div>


<a name="id013257" shape="rect"></a>
<div class="topic">
<h3>unknown result of subanalysis; <em>subanalysis unknown result</em></h3>

<p>analytical data achieved by a partial analysis when a call case-related value of attribute does not exist in this particular call</p>
</div>


<a name="id021189" shape="rect"></a>
<div class="topic">
<h3>unlicensed mobile access; <em>UMA</em></h3>

<p>technology that provides access to GSM and GPRS mobile services over unlicensed spectrum technologies, including Bluetooth and 802.11</p>
</div>


<a name="id016639" shape="rect"></a>
<div class="topic">
<h3>unlock key</h3>

<p>numeric code for unlocking a game</p>
</div>


<a name="id08883" shape="rect"></a>
<div class="topic">
<h3>unlocked</h3>

<p>administrative state of a radio network object in which the object is in active use and available for call control purposes</p>
</div>


<a name="id011329" shape="rect"></a>
<div class="topic">
<h3>unnumbered acknowledge; <em>unnumbered acknowledgement</em>; <em>unnumbered acknowledgement frame</em>; <em>UA frame</em>; <em>UA</em></h3>

<p>frame used by a logical link entity (LLE) to acknowledge the receipt and acceptance of the mode-setting commands 'set asynchronous balanced mode' (SABM) or 'disconnect' (DISC)</p>
</div>


<a name="p2xhtm-repid-18792" shape="rect"></a>
<div class="topic">
<h3>unnumbered acknowledgement</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id011329#id011329" onclick="sync(this);return true" shape="rect">See unnumbered acknowledge</a></p>
</div>


<a name="p2xhtm-repid-18793" shape="rect"></a>
<div class="topic">
<h3>unnumbered acknowledgement frame</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id011329#id011329" onclick="sync(this);return true" shape="rect">See unnumbered acknowledge</a></p>
</div>


<a name="p2xhtm-repid-18794" shape="rect"></a>
<div class="topic">
<h3>unnumbered frame</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id011131#id011131" onclick="sync(this);return true" shape="rect">See unnumbered information frame</a></p>
</div>


<a name="p2xhtm-repid-18795" shape="rect"></a>
<div class="topic">
<h3>unnumbered information</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id011131#id011131" onclick="sync(this);return true" shape="rect">See unnumbered information frame</a></p>
</div>


<a name="id011131" shape="rect"></a>
<div class="topic">
<h3>unnumbered information frame; <em>unnumbered frame</em>; <em>unnumbered information</em>; <em>UI</em></h3>

<p>logical link control frame which is used for control purposes in connection-oriented operations and which is used for unacknowledged information transfer, that is, the transmission is not secured by retransmissions</p>
</div>


<a name="p2xhtm-repid-18797" shape="rect"></a>
<div class="topic">
<h3>unparsed entity</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id015822#id015822" onclick="sync(this);return true" shape="rect">See external unparsed entity</a></p>
</div>


<a name="id010929" shape="rect"></a>
<div class="topic">
<h3>unprotected data</h3>

<p>data whose content is not protected from errors which may occur during data transfer</p>
</div>


<a name="p2xhtm-repid-18799" shape="rect"></a>
<div class="topic">
<h3>unprovide</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012728#id012728" onclick="sync(this);return true" shape="rect">See withdraw</a></p>
</div>


<a name="p2xhtm-repid-18800" shape="rect"></a>
<div class="topic">
<h3>unrestricted digital information</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id06811#id06811" onclick="sync(this);return true" shape="rect">See unrestricted digital information service</a></p>
</div>


<a name="id06811" shape="rect"></a>
<div class="topic">
<h3>unrestricted digital information service; <em>unrestricted digital information</em>; <em>UDI</em></h3>

<p>category of data transmission where the bit format is entirely unrestricted and the information is transferred at its specified bit rate without alteration</p>
</div>


<a name="id012727" shape="rect"></a>
<div class="topic">
<h3>unrestricted digital information with tones and announcements service; <em>UDI-TA</em></h3>

<p>transfer of information sequence of bits, including tones and announcements, at its specified bit rate without alteration</p>
</div>


<a name="id021002" shape="rect"></a>
<div class="topic">
<h3>unrestricted mode</h3>

<p>operational mode in which it is possible to manage, via a single connection, all the network elements which are located in the same TMN data communications network</p>
</div>


<a name="id09256" shape="rect"></a>
<div class="topic">
<h3>unspecified bit rate; <em>UBR</em></h3>

<p>bit rate that does not specify traffic-related service guarantees</p>
</div>


<a name="id018406" shape="rect"></a>
<div class="topic">
<h3>unstructured CES</h3>

<p>circuit emulation service (CES) that emulates a point-to-point E1/JT1/T1 circuit in which case the complete E1/JT1/T1 frame is transported within ATM cells</p>
</div>


<a name="id09191" shape="rect"></a>
<div class="topic">
<h3>unstructured supplementary service data; <em>USSD</em></h3>

<p>functions that provide the means to carry textual information between a mobile subscriber and an application in the network</p>
</div>


<a name="id012036" shape="rect"></a>
<div class="topic">
<h3>unstructured supplementary service data centre; <em>USSD centre</em>; <em>USSD center /US/</em>; <em>USSDC</em></h3>

<p>centre which provides services to carry textual information between a mobile subscriber and an application in the network</p>
</div>


<a name="id013258" shape="rect"></a>
<div class="topic">
<h3>unsupervised call drop-back</h3>

<p>call drop-back in which call set-up of the leg C is not controlled</p>
</div>


<a name="id09187" shape="rect"></a>
<div class="topic">
<h3>untitled build; <em>UT</em></h3>

<p>software build which is created without a need to make it active</p>
</div>


<a name="id021031" shape="rect"></a>
<div class="topic">
<h3>unusable seconds; <em>UUS</em></h3>

<p>number of seconds during which the IMA link state has been unusable</p>
</div>


<a name="p2xhtm-repid-18811" shape="rect"></a>
<div class="topic">
<h3>unused fibre</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id09432#id09432" onclick="sync(this);return true" shape="rect">See dark fibre</a></p>
</div>


<a name="p2xhtm-repid-18812" shape="rect"></a>
<div class="topic">
<h3>UP</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010108#id010108" onclick="sync(this);return true" shape="rect">See user plane</a></p>
</div>


<a name="p2xhtm-repid-18813" shape="rect"></a>
<div class="topic">
<h3>UP</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id0432#id0432" onclick="sync(this);return true" shape="rect">See user part</a></p>
</div>


<a name="id015466" shape="rect"></a>
<div class="topic">
<h3>up state</h3>

<p>state of an item characterised by the fact that it can perform a required function, assuming that the external resources, if required, are provided</p>
</div>


<a name="p2xhtm-repid-18815" shape="rect"></a>
<div class="topic">
<h3>up-down counter</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id01819#id01819" onclick="sync(this);return true" shape="rect">See reversible counter</a></p>
</div>


<a name="p2xhtm-repid-18816" shape="rect"></a>
<div class="topic">
<h3>UPA</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012335#id012335" onclick="sync(this);return true" shape="rect">See user part available message</a></p>
</div>


<a name="p2xhtm-repid-18817" shape="rect"></a>
<div class="topic">
<h3>UPC</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id020512#id020512" onclick="sync(this);return true" shape="rect">See user plane control</a></p>
</div>


<a name="p2xhtm-repid-18818" shape="rect"></a>
<div class="topic">
<h3>UPC</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id07508#id07508" onclick="sync(this);return true" shape="rect">See usage parameter control</a></p>
</div>


<a name="p2xhtm-repid-18819" shape="rect"></a>
<div class="topic">
<h3>UPD</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id015582#id015582" onclick="sync(this);return true" shape="rect">See user plane destination</a></p>
</div>


<a name="p2xhtm-repid-18820" shape="rect"></a>
<div class="topic">
<h3>UPD measurement</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id017183#id017183" onclick="sync(this);return true" shape="rect">See user plane destination measurement</a></p>
</div>


<a name="id02550" shape="rect"></a>
<div class="topic">
<h3>update</h3>

<p>make additions, modifications and deletions required by tasks</p>
</div>


<a name="p2xhtm-repid-18822" shape="rect"></a>
<div class="topic">
<h3>update</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id04816#id04816" onclick="sync(this);return true" shape="rect">See software update</a></p>
</div>


<a name="id011330" shape="rect"></a>
<div class="topic">
<h3>update GPRS location; <em>UGL</em></h3>

<p>message with which serving GPRS support node (SGSN) starts the discussion to the home location register (HLR) for a location update</p>
</div>


<a name="id07195" shape="rect"></a>
<div class="topic">
<h3>update requiring data conversion</h3>

<p>software update where the new data package is generated with conversion programs</p>
</div>


<a name="id016828" shape="rect"></a>
<div class="topic">
<h3>updated location</h3>

<p>current geographic location of the emergency service caller</p>
</div>


<a name="id016829" shape="rect"></a>
<div class="topic">
<h3>updated/last known location; <em>last known location</em></h3>

<p>most recent location information of the calling user that the GSM network is able to provide, for example, to the emergency service message entity (ESME)</p>
</div>


<a name="p2xhtm-repid-18827" shape="rect"></a>
<div class="topic">
<h3>UPDR</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id015583#id015583" onclick="sync(this);return true" shape="rect">See user plane destination reference</a></p>
</div>


<a name="id011692" shape="rect"></a>
<div class="topic">
<h3>upgrade</h3>

<p>to improve software or hardware by adding new hardware or by installing a new version of the software</p>
</div>


<a name="p2xhtm-repid-18829" shape="rect"></a>
<div class="topic">
<h3>upgrade</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id04821#id04821" onclick="sync(this);return true" shape="rect">See release upgrade</a></p>
</div>


<a name="id020231" shape="rect"></a>
<div class="topic">
<h3>uplink</h3>

<p>connection from a switch up to the IP network</p>
</div>


<a name="id05016" shape="rect"></a>
<div class="topic">
<h3>uplink; <em>reverse link</em>; <em>UL</em></h3>

<p>direction of transmission in which the mobile station transmits and the base transceiver station receives</p>
</div>


<a name="id016432" shape="rect"></a>
<div class="topic">
<h3>uplink data threshold</h3>

<p>in charging configuration, the number of bytes in the uplink which causes charging record (CDR) triggering when it is reached for a PDP context of a normal user</p>
</div>


<a name="id013534" shape="rect"></a>
<div class="topic">
<h3>uplink iteration</h3>

<p>iteration done in the uplink to find, for example, the required mobile station transmission powers, best server, outage and cell loading</p>
</div>


<a name="id013535" shape="rect"></a>
<div class="topic">
<h3>uplink load control</h3>

<p>overload control in the uplink used for deciding how to cut off mobile stations until the TX power of the base transceiver station is low enough</p>
</div>


<a name="id019740" shape="rect"></a>
<div class="topic">
<h3>uplink time difference of arrival; <em>U-TDOA</em></h3>

<p>time difference of arrival which is based on network measurements of the time of arrival (TOA) of a known signal sent from the mobile terminal and received at three or more location measurement units (LMU)</p>
</div>


<a name="id010737" shape="rect"></a>
<div class="topic">
<h3>upload</h3>

<p>transfer a file from a local computer to a server via a modem or network</p>
</div>


<a name="p2xhtm-repid-18837" shape="rect"></a>
<div class="topic">
<h3>upper-layer protocol</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id013469#id013469" onclick="sync(this);return true" shape="rect">See SCTP user application</a></p>
</div>


<a name="id07566" shape="rect"></a>
<div class="topic">
<h3>upstream</h3>

<p>direction from network to node</p>
</div>


<a name="id06387" shape="rect"></a>
<div class="topic">
<h3>upstream failure indication; <em>UFI</em></h3>

<p>indication showing that the upstream signal arriving at that maintenance entity is defective</p>
</div>


<a name="p2xhtm-repid-18840" shape="rect"></a>
<div class="topic">
<h3>UPT</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012336#id012336" onclick="sync(this);return true" shape="rect">See user part test message</a></p>
</div>


<a name="p2xhtm-repid-18841" shape="rect"></a>
<div class="topic">
<h3>UPT</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id05520#id05520" onclick="sync(this);return true" shape="rect">See universal personal telecommunications</a></p>
</div>


<a name="id05593" shape="rect"></a>
<div class="topic">
<h3>UPT customer</h3>

<p>person who, or entity which, obtains a UPT service from a UPT service provider on behalf of one or more UPT users and is responsible for payment of the charges to that service provider</p>
</div>


<a name="p2xhtm-repid-18843" shape="rect"></a>
<div class="topic">
<h3>UPT number</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id05597#id05597" onclick="sync(this);return true" shape="rect">See universal personal telecommunication number</a></p>
</div>


<a name="id05595" shape="rect"></a>
<div class="topic">
<h3>UPT service profile; <em>service profile</em></h3>

<p>record containing all the information related to a UPT user in order to provide that user with the UPT service</p>
</div>


<a name="p2xhtm-repid-18845" shape="rect"></a>
<div class="topic">
<h3>UPT subscriber</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id05593#id05593" onclick="sync(this);return true" shape="rect">See UPT customer</a></p>
</div>


<a name="id05594" shape="rect"></a>
<div class="topic">
<h3>UPT user</h3>

<p>person who, or entity which, has access to UPT services and has been assigned a UPT number</p>
</div>


<a name="p2xhtm-repid-18847" shape="rect"></a>
<div class="topic">
<h3>UPTN</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id05597#id05597" onclick="sync(this);return true" shape="rect">See universal personal telecommunication number</a></p>
</div>


<a name="p2xhtm-repid-18848" shape="rect"></a>
<div class="topic">
<h3>UPU</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id020209#id020209" onclick="sync(this);return true" shape="rect">See user part unavailable</a></p>
</div>


<a name="p2xhtm-repid-18849" shape="rect"></a>
<div class="topic">
<h3>UPUS</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id015962#id015962" onclick="sync(this);return true" shape="rect">See user provided, unscreened</a></p>
</div>


<a name="p2xhtm-repid-18850" shape="rect"></a>
<div class="topic">
<h3>UPVP</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id015963#id015963" onclick="sync(this);return true" shape="rect">See user provided, verified, and passed</a></p>
</div>


<a name="p2xhtm-repid-18851" shape="rect"></a>
<div class="topic">
<h3>URA</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id011491#id011491" onclick="sync(this);return true" shape="rect">See UTRAN registration area</a></p>
</div>


<a name="p2xhtm-repid-18852" shape="rect"></a>
<div class="topic">
<h3>URA</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id019730#id019730" onclick="sync(this);return true" shape="rect">See user range accuracy</a></p>
</div>


<a name="id011488" shape="rect"></a>
<div class="topic">
<h3>URA updating; <em>UTRAN registration area updating</em>; <em>user registration area updating</em></h3>

<p>family of procedures that updates the UMTS terrestrial radio access network (UTRAN) registration area of the mobile station when a radio resource control (RRC) connection exists and the position of the mobile station is known on URA level in the UTRAN</p>
</div>


<a name="id015643" shape="rect"></a>
<div class="topic">
<h3>URA_PCH state</h3>

<p>operational mode of the mobile station (MS) while receiving user data on the paging channel (PCH)</p>
</div>


<a name="p2xhtm-repid-18855" shape="rect"></a>
<div class="topic">
<h3>URI</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id014281#id014281" onclick="sync(this);return true" shape="rect">See uniform resource identifier</a></p>
</div>


<a name="p2xhtm-repid-18856" shape="rect"></a>
<div class="topic">
<h3>URL</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010343#id010343" onclick="sync(this);return true" shape="rect">See URL address</a></p>
</div>


<a name="id010343" shape="rect"></a>
<div class="topic">
<h3>URL address; <em>uniform resource locator</em>; <em>http address</em>; <em>address</em>; <em>URL</em></h3>

<p>identifier individualising both a file or directory in an information network and the protocol needed to use them</p>
</div>


<a name="id019401" shape="rect"></a>
<div class="topic">
<h3>URL mapper; <em>UMA</em></h3>

<p>filter that maps the user's URL addresses to the subscriber and group management function (SGMF)</p>
</div>


<a name="id019335" shape="rect"></a>
<div class="topic">
<h3>URL visibility restriction; <em>URLVR</em></h3>

<p>method of hiding the actual URL address of a speaking user from a listening user during a PoC call</p>
</div>


<a name="p2xhtm-repid-18860" shape="rect"></a>
<div class="topic">
<h3>URLVR</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id019335#id019335" onclick="sync(this);return true" shape="rect">See URL visibility restriction</a></p>
</div>


<a name="p2xhtm-repid-18861" shape="rect"></a>
<div class="topic">
<h3>US equal access</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id013982#id013982" onclick="sync(this);return true" shape="rect">See equal access</a></p>
</div>


<a name="id010098" shape="rect"></a>
<div class="topic">
<h3>usage</h3>

<p>marking of connection-related resources (termination points) for a certain purpose of use</p>
</div>


<a name="id04697" shape="rect"></a>
<div class="topic">
<h3>usage parameter control</h3>

<p>taking of appropriate action if usage monitoring establishes that the negotiated values of the information transfer parameters of a virtual channel or a virtual path are exceeded</p>
</div>


<a name="id07508" shape="rect"></a>
<div class="topic">
<h3>usage parameter control; <em>UPC</em></h3>

<p>set of actions taken by the network to monitor and control traffic at the user-network interface, to protect network resources from malicious as well as unintentional misbehaviour by detecting violations of negotiated parameters and taking appropriate actions</p>
</div>


<a name="id013496" shape="rect"></a>
<div class="topic">
<h3>usage recording function</h3>

<p>function which determines or records information about relevant events and resources</p>
</div>


<a name="id013497" shape="rect"></a>
<div class="topic">
<h3>usage reporting function</h3>

<p>function which reports the determined or recorded usage to an external entity</p>
</div>


<a name="id020320" shape="rect"></a>
<div class="topic">
<h3>usage state</h3>

<p>attribute that describes the usage state of the entity represented by the managed object</p>
</div>


<a name="id014749" shape="rect"></a>
<div class="topic">
<h3>USB interface</h3>

<p>interface that is responsible for data transfer to and from the universal serial bus (USB), by extracting clock and data from the USB cable</p>
</div>


<a name="p2xhtm-repid-18869" shape="rect"></a>
<div class="topic">
<h3>USC</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id02939#id02939" onclick="sync(this);return true" shape="rect">See mobile services switching centre</a></p>
</div>


<a name="p2xhtm-repid-18870" shape="rect"></a>
<div class="topic">
<h3>USC</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012812#id012812" onclick="sync(this);return true" shape="rect">See UE service capabilities</a></p>
</div>


<a name="p2xhtm-repid-18871" shape="rect"></a>
<div class="topic">
<h3>use of hardware</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id016026#id016026" onclick="sync(this);return true" shape="rect">See use of hardware CDR</a></p>
</div>


<a name="id016026" shape="rect"></a>
<div class="topic">
<h3>use of hardware CDR; <em>use of hardware</em>; <em>HW CDR</em>; <em>HW</em></h3>

<p>charging record (CDR) which can be generated in the mobile services switching centre (MSC) when conference equipment is used with the multi-party supplementary service</p>
</div>


<a name="p2xhtm-repid-18873" shape="rect"></a>
<div class="topic">
<h3>USEC</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010031#id010031" onclick="sync(this);return true" shape="rect">See user-based security model</a></p>
</div>


<a name="id010707" shape="rect"></a>
<div class="topic">
<h3>Usenet; <em>UseNet</em>; <em>USENET</em></h3>

<p>world-wide network of UNIX systems that has a decentralised administration and is used as a bulletin board system by special-interest discussion groups</p>
</div>


<a name="p2xhtm-repid-18875" shape="rect"></a>
<div class="topic">
<h3>UseNet</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010707#id010707" onclick="sync(this);return true" shape="rect">See Usenet</a></p>
</div>


<a name="p2xhtm-repid-18876" shape="rect"></a>
<div class="topic">
<h3>USENET</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010707#id010707" onclick="sync(this);return true" shape="rect">See Usenet</a></p>
</div>


<a name="p2xhtm-repid-18877" shape="rect"></a>
<div class="topic">
<h3>user</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id01866#id01866" onclick="sync(this);return true" shape="rect">See user of the signalling system</a></p>
</div>


<a name="id06517" shape="rect"></a>
<div class="topic">
<h3>user</h3>

<p>entity that uses a telecommunication service</p>
</div>


<a name="id04056" shape="rect"></a>
<div class="topic">
<h3>user access; <em>user-network access</em></h3>

<p>means by which a user is connected to a telecommunication network in order to use the services or facilities of that network</p>
</div>


<a name="id09923" shape="rect"></a>
<div class="topic">
<h3>user access part; <em>access part</em></h3>

<p>part of DX 200 switching system that enables terminal devices to access the switching system</p>
</div>


<a name="id014934" shape="rect"></a>
<div class="topic">
<h3>user account</h3>

<p>account with which access rights and other definitions required for the use of an information system may be associated, managed by the system administrator</p>
</div>


<a name="p2xhtm-repid-18882" shape="rect"></a>
<div class="topic">
<h3>user account for NMS</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id015354#id015354" onclick="sync(this);return true" shape="rect">See NE account</a></p>
</div>


<a name="id09184" shape="rect"></a>
<div class="topic">
<h3>user actor</h3>

<p>actor that runs in user mode in its own private address space</p>
</div>


<a name="id016907" shape="rect"></a>
<div class="topic">
<h3>user agent; <em>UA</em></h3>

<p>in the context of message handling, a component of messaging service by means of which a single direct user engages in message handling</p>
</div>


<a name="id014097" shape="rect"></a>
<div class="topic">
<h3>user agent client; <em>calling user agent</em>; <em>UAC</em></h3>

<p>client application that initiates a session initiation protocol (SIP) request</p>
</div>


<a name="id018211" shape="rect"></a>
<div class="topic">
<h3>user agent header; <em>UAHeader</em></h3>

<p>header which contains information about the mobile station originating the request</p>
</div>


<a name="id018212" shape="rect"></a>
<div class="topic">
<h3>user agent profile; <em>UAProfile</em></h3>

<p>profile information about the capabilities of a device, the operating and network environment, and a user's personal preferences for receiving content</p>
</div>


<a name="id021230" shape="rect"></a>
<div class="topic">
<h3>user authority manager; <em>EM user authority manager</em></h3>

<p>element manager (EM) application which offers a user with administrator rights a graphical user interface for creating, modifying, and deleting EM users and EM user groups, and for mapping and unmapping EM users to man-machine interface (MMI) users</p>
</div>


<a name="id014674" shape="rect"></a>
<div class="topic">
<h3>user certificate; <em>certificate</em>; <em>user's personal certificate</em></h3>

<p>certificate issued to the user by a certification authority (CA) and used for the verification of digital signatures and for client authentication</p>
</div>


<a name="id07308" shape="rect"></a>
<div class="topic">
<h3>user class</h3>

<p>authority class to which a member of staff in a telecommunications company can be placed according to expertise and tasks with the help of the username</p>
</div>


<a name="id016908" shape="rect"></a>
<div class="topic">
<h3>user control part; <em>UCP</em></h3>

<p>part of the user plane that is concerned with the control actions initiated by the user to change the configuration of application objects</p>
</div>


<a name="id019385" shape="rect"></a>
<div class="topic">
<h3>user control server; <em>UCS</em></h3>

<p>in a push to talk call processor, a server in the control plane which handles the control actions and end-user signalling transactions in one-to-one calls</p>
</div>


<a name="id05513" shape="rect"></a>
<div class="topic">
<h3>user controlled outgoing call barring; <em>OCB-UC</em></h3>

<p>supplementary service which enables calls belonging to certain types to be rejected if they are originated by the served user</p>
</div>


<a name="p2xhtm-repid-18894" shape="rect"></a>
<div class="topic">
<h3>user credentials</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id09071#id09071" onclick="sync(this);return true" shape="rect">See credentials</a></p>
</div>


<a name="id016822" shape="rect"></a>
<div class="topic">
<h3>user data header; <em>UDH</em></h3>

<p>area of data that precedes the text in a short message</p>
</div>


<a name="id016823" shape="rect"></a>
<div class="topic">
<h3>user data header length; <em>UDHL</em></h3>

<p>first octet of a user data header (UDH) that indicates the length of the remainder of the UDH in octets</p>
</div>


<a name="id016824" shape="rect"></a>
<div class="topic">
<h3>user data length; <em>UDL</em></h3>

<p>second octet of an unstructured supplementary service data (USSD) string in a USSD message that indicates the length of the entire short message</p>
</div>


<a name="id016825" shape="rect"></a>
<div class="topic">
<h3>user data prefixing; <em>UDPR</em></h3>

<p>method for requesting the toggling of anonymity for a message</p>
</div>


<a name="id09796" shape="rect"></a>
<div class="topic">
<h3>user data service</h3>

<p>function that provides user data and subscriber number reading services</p>
</div>


<a name="id07688" shape="rect"></a>
<div class="topic">
<h3>user database</h3>

<p>database including system users and, as regards the system, significant information concerning the user</p>
</div>


<a name="id013499" shape="rect"></a>
<div class="topic">
<h3>user datagram; <em>user message</em></h3>

<p>unit of data delivered across the interface between an appropriate transport protocol and its user</p>
</div>


<a name="id06081" shape="rect"></a>
<div class="topic">
<h3>user datagram protocol; <em>UDP</em></h3>

<p>connectionless transport protocol which provides the exchange of datagrams without acknowledgement or guaranteed delivery</p>
</div>


<a name="p2xhtm-repid-18903" shape="rect"></a>
<div class="topic">
<h3>user defined user busy</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id04263#id04263" onclick="sync(this);return true" shape="rect">See user determined user busy</a></p>
</div>


<a name="id04263" shape="rect"></a>
<div class="topic">
<h3>user determined user busy; <em>user defined user busy</em>; <em>UDUB</em></h3>

<p>case where the user chooses to indicate the busy condition</p>
</div>


<a name="id09924" shape="rect"></a>
<div class="topic">
<h3>user device driver</h3>

<p>device driver for user defined architectures and interfaces</p>
</div>


<a name="id011489" shape="rect"></a>
<div class="topic">
<h3>user equipment; <em>UE</em></h3>

<p>device allowing a user to access network services</p>
</div>


<a name="p2xhtm-repid-18907" shape="rect"></a>
<div class="topic">
<h3>user equipment (3G)</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012666#id012666" onclick="sync(this);return true" shape="rect">See 3G user equipment</a></p>
</div>


<a name="id014361" shape="rect"></a>
<div class="topic">
<h3>user equipment control function; <em>UE control function</em>; <em>UCF</em></h3>

<p>in an All-IP radio access network (RAN), a function which controls the active radio network terminals, involving directing mobile handsets, terminating Iu/A signalling, controlling and terminating radio resource control (RRC) connections, and controlling appropriate user plane connections to the cell resource server/cell gateway (CRS/CGW)</p>
</div>


<a name="id017044" shape="rect"></a>
<div class="topic">
<h3>user executable script</h3>

<p>subscriber-specific static executable script</p>
</div>


<a name="id018370" shape="rect"></a>
<div class="topic">
<h3>user group</h3>

<p>group of users who have the same privileges within the group</p>
</div>


<a name="id018371" shape="rect"></a>
<div class="topic">
<h3>user group profile management</h3>

<p>application that allows the system administrator to manage the users and user groups, their geographical responsibilities and operational privileges, network-wide</p>
</div>


<a name="p2xhtm-repid-18912" shape="rect"></a>
<div class="topic">
<h3>user ID</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id07382#id07382" onclick="sync(this);return true" shape="rect">See user name</a></p>
</div>


<a name="p2xhtm-repid-18913" shape="rect"></a>
<div class="topic">
<h3>user ID</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id07384#id07384" onclick="sync(this);return true" shape="rect">See user identity</a></p>
</div>


<a name="p2xhtm-repid-18914" shape="rect"></a>
<div class="topic">
<h3>user ID / password based authentication</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id013944#id013944" onclick="sync(this);return true" shape="rect">See HTTP authentication</a></p>
</div>


<a name="id07383" shape="rect"></a>
<div class="topic">
<h3>user identification</h3>

<p>identifying that the user is a legitimate user of the system</p>
</div>


<a name="p2xhtm-repid-18916" shape="rect"></a>
<div class="topic">
<h3>user identifier</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id07382#id07382" onclick="sync(this);return true" shape="rect">See user name</a></p>
</div>


<a name="id07384" shape="rect"></a>
<div class="topic">
<h3>user identity; <em>user ID</em></h3>

<p>digital identity defined in a system for which authorisations are granted and which is used in user identification and authentication</p>
</div>


<a name="id021010" shape="rect"></a>
<div class="topic">
<h3>user information management</h3>

<p>process of managing user accounts and profiles</p>
</div>


<a name="id01220" shape="rect"></a>
<div class="topic">
<h3>user interface; <em>UI</em></h3>

<p>interface via which a user can interact with software and peripheral equipment</p>
</div>


<a name="id014454" shape="rect"></a>
<div class="topic">
<h3>user interface control</h3>

<p>primary ownership of the mobile device user interface (UI), related to both branding and typical usage patterns created or affected by the UI design</p>
</div>


<a name="id015504" shape="rect"></a>
<div class="topic">
<h3>user interface element</h3>

<p>from the designer's point of view, an atomic element in a graphical user interface (GUI)</p>
</div>


<a name="id020582" shape="rect"></a>
<div class="topic">
<h3>user interface operator</h3>

<p>actor that is used in use cases which describe generic user interface operations where the role of the user is insignificant</p>
</div>


<a name="id012817" shape="rect"></a>
<div class="topic">
<h3>user interface profile</h3>

<p>user profile which contains information to present the personalised user interface within the capabilities of the terminal and serving network</p>
</div>


<a name="id011678" shape="rect"></a>
<div class="topic">
<h3>user management</h3>

<p>set of system security functions which enable the system administrator to define the views that a user or a group can edit, and which operations a group can perform within the system</p>
</div>


<a name="id09797" shape="rect"></a>
<div class="topic">
<h3>user management</h3>

<p>function that manages basic data related to user</p>
</div>


<a name="id021004" shape="rect"></a>
<div class="topic">
<h3>user management interface</h3>

<p>interface for creating, deleting, and uploading user accounts and profiles</p>
</div>


<a name="p2xhtm-repid-18927" shape="rect"></a>
<div class="topic">
<h3>user message</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id013499#id013499" onclick="sync(this);return true" shape="rect">See user datagram</a></p>
</div>


<a name="id014098" shape="rect"></a>
<div class="topic">
<h3>user mobility server; <em>UMS</em></h3>

<p>part of the home subscriber server (HSS) which participates in the mobility management, location query, and authentication procedures, and provides user and service mobility information</p>
</div>


<a name="id07382" shape="rect"></a>
<div class="topic">
<h3>user name; <em>username</em>; <em>login ID</em></h3>

<p>string of characters that represents the user in an information system</p>
</div>


<a name="id05246" shape="rect"></a>
<div class="topic">
<h3>user notification procedure</h3>

<p>procedure by means of which the network is able to send call related information during an active call</p>
</div>


<a name="p2xhtm-repid-18931" shape="rect"></a>
<div class="topic">
<h3>user of the signaling system /US/</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id01866#id01866" onclick="sync(this);return true" shape="rect">See user of the signalling system</a></p>
</div>


<a name="id01866" shape="rect"></a>
<div class="topic">
<h3>user of the signalling system; <em>user</em>; <em>user of the signaling system /US/</em></h3>

<p>functional entity, for example, a telecommunication service, which uses a signalling network to transfer information</p>
</div>


<a name="id0432" shape="rect"></a>
<div class="topic">
<h3>user part; <em>UP</em></h3>

<p>functional part of the common channel signalling system which transfers signalling messages via the message transfer part. Different types of user parts exist (for example, for telephone and data services), each of which is specified to a particular use of the signalling system</p>
</div>


<a name="id012335" shape="rect"></a>
<div class="topic">
<h3>user part available message; <em>UPA</em></h3>

<p>signalling message which is sent as a response to the user part test message to indicate that the user part is available</p>
</div>


<a name="id012336" shape="rect"></a>
<div class="topic">
<h3>user part test message; <em>UPT</em></h3>

<p>signalling message which is sent to test the status of a user part marked as unavailable for a signalling point</p>
</div>


<a name="id020209" shape="rect"></a>
<div class="topic">
<h3>user part unavailable; <em>UPU</em></h3>

<p>message which is used in the signalling connection control part (SCCP) management service to indicate that the SCCP of the remote end is unavailable or unknown</p>
</div>


<a name="id010108" shape="rect"></a>
<div class="topic">
<h3>user plane; <em>U-plane</em>; <em>UP</em></h3>

<p>layer in which user data or speech coming from the radio network controller is converted to PCM (pulse code modulation) user data and vice versa</p>
</div>


<a name="id018531" shape="rect"></a>
<div class="topic">
<h3>user plane</h3>

<p>media traffic between a connected IP address and a PCM time-slot</p>
</div>


<a name="id020512" shape="rect"></a>
<div class="topic">
<h3>user plane control; <em>UPC</em></h3>

<p>set of functions within the MSC server (MSS) and gateway control server (GCS), which selects the multimedia gateways (MGW) used in the call and the bearer characteristics used for the user plane, and creates the user plane legs between different MGWs and between the integrated MSS and MGW</p>
</div>


<a name="id015582" shape="rect"></a>
<div class="topic">
<h3>user plane destination; <em>UPD</em></h3>

<p>information defining user plane connectivity to and from multimedia gateways (MGW) controlled by an MSC server</p>
</div>


<a name="id017183" shape="rect"></a>
<div class="topic">
<h3>user plane destination measurement; <em>UPD measurement</em></h3>

<p>measurement which gives information about the amount of traffic for a specific user plane destination in a specific multimedia gateway (MGW)</p>
</div>


<a name="id015583" shape="rect"></a>
<div class="topic">
<h3>user plane destination reference; <em>UPDR</em></h3>

<p>parameter on circuit group and route data which forms a flexible and indirect link between a control plane and user plane via user plane analysis</p>
</div>


<a name="id017186" shape="rect"></a>
<div class="topic">
<h3>user plane destination to number destination measurement</h3>

<p>measurement which shows the number and type of calls or call attempts received in each defined pair of a user plane destination (UPD) and a number destination during the results accumulation period</p>
</div>


<a name="id014915" shape="rect"></a>
<div class="topic">
<h3>user plane mode</h3>

<p>information element (IE) that indicates the mode of operation of the Iu user plane requested for realising the radio access bearer (RAB)</p>
</div>


<a name="id020951" shape="rect"></a>
<div class="topic">
<h3>user plane traffic</h3>

<p>traffic that consists of IP media streams based on the real-time transport protocol (RTP) and real-time transport control protocol (RTCP)</p>
</div>


<a name="id020561" shape="rect"></a>
<div class="topic">
<h3>user plane transport</h3>

<p>multimedia gateway functions which terminate the user plane from switched circuit network (SCN) types of interfaces and packet-based ATM or IP interfaces, and perform the transport conversion between these interfaces</p>
</div>


<a name="p2xhtm-repid-18947" shape="rect"></a>
<div class="topic">
<h3>user priority time</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id03256#id03256" onclick="sync(this);return true" shape="rect">See hold time</a></p>
</div>


<a name="id07389" shape="rect"></a>
<div class="topic">
<h3>user profile</h3>

<p>profile defined to a user, containing data on the user's rights, and the personalised settings for the software or service</p>
</div>


<a name="id015962" shape="rect"></a>
<div class="topic">
<h3>user provided, unscreened; <em>UPUS</em></h3>

<p>number provided by a user who has a special arrangement</p>
</div>


<a name="id015963" shape="rect"></a>
<div class="topic">
<h3>user provided, verified, and passed; <em>UPVP</em></h3>

<p>completed number that has passed network screening, consisting of an edited or unedited calling-user-provided full or partial number</p>
</div>


<a name="id019730" shape="rect"></a>
<div class="topic">
<h3>user range accuracy; <em>URA</em></h3>

<p>estimate of the user range errors in the navigation data for the transmitting satellite</p>
</div>


<a name="p2xhtm-repid-18952" shape="rect"></a>
<div class="topic">
<h3>user registration area</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id011491#id011491" onclick="sync(this);return true" shape="rect">See UTRAN registration area</a></p>
</div>


<a name="p2xhtm-repid-18953" shape="rect"></a>
<div class="topic">
<h3>user registration area updating</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id011488#id011488" onclick="sync(this);return true" shape="rect">See URA updating</a></p>
</div>


<a name="id021247" shape="rect"></a>
<div class="topic">
<h3>user repository</h3>

<p>on a directory server, a directory that is used to store the user information</p>
</div>


<a name="id012338" shape="rect"></a>
<div class="topic">
<h3>user service information prime</h3>

<p>signalling parameter sent in the forward direction indicating the additional bearer capability requested by the calling party</p>
</div>


<a name="p2xhtm-repid-18956" shape="rect"></a>
<div class="topic">
<h3>user services identity module</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010176#id010176" onclick="sync(this);return true" shape="rect">See UMTS subscriber identity module</a></p>
</div>


<a name="id012818" shape="rect"></a>
<div class="topic">
<h3>user services profile</h3>

<p>user profile which contains identification of subscriber services, their status and a reference to service preferences</p>
</div>


<a name="id03623" shape="rect"></a>
<div class="topic">
<h3>user terminal</h3>

<p>data terminal by which a user communicates with a computer system</p>
</div>


<a name="id09185" shape="rect"></a>
<div class="topic">
<h3>user to service information; <em>UTSI</em></h3>

<p>information element from the user received by the service</p>
</div>


<a name="p2xhtm-repid-18960" shape="rect"></a>
<div class="topic">
<h3>user to user signalling</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id03370#id03370" onclick="sync(this);return true" shape="rect">See user-to-user signalling</a></p>
</div>


<a name="id019383" shape="rect"></a>
<div class="topic">
<h3>user traffic server; <em>UTS</em></h3>

<p>in a push to talk call processor, a server in the user plane which handles the speech packets coming from and going to end-users' terminals in one-to-one calls</p>
</div>


<a name="id011134" shape="rect"></a>
<div class="topic">
<h3>user X; <em>subscriber X</em></h3>

<p>subscriber who is engaged in a call with user Y</p>
</div>


<a name="id011135" shape="rect"></a>
<div class="topic">
<h3>user Y; <em>subscriber Y</em></h3>

<p>subscriber who is provided with the call waiting facility by the network and who reacts to the waiting call</p>
</div>


<a name="id011136" shape="rect"></a>
<div class="topic">
<h3>user Z; <em>subscriber Z</em></h3>

<p>subscriber who originates a call to user Y and thus causes the call waiting facility to be invoked</p>
</div>


<a name="p2xhtm-repid-18965" shape="rect"></a>
<div class="topic">
<h3>user's personal certificate</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id014674#id014674" onclick="sync(this);return true" shape="rect">See user certificate</a></p>
</div>


<a name="id010031" shape="rect"></a>
<div class="topic">
<h3>user-based security model; <em>USM</em>; <em>USEC</em></h3>

<p>set of services that provide security for simple network management protocol messages</p>
</div>


<a name="p2xhtm-repid-18967" shape="rect"></a>
<div class="topic">
<h3>user-controlled keyword change</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012745#id012745" onclick="sync(this);return true" shape="rect">See procedure for changing the keyword</a></p>
</div>


<a name="p2xhtm-repid-18968" shape="rect"></a>
<div class="topic">
<h3>user-controlled password change</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012745#id012745" onclick="sync(this);return true" shape="rect">See procedure for changing the keyword</a></p>
</div>


<a name="id021222" shape="rect"></a>
<div class="topic">
<h3>user-defined report</h3>

<p>report that is based on a structured query language (SQL) statement which the user has created, and that lists selected items from a database</p>
</div>


<a name="id05607" shape="rect"></a>
<div class="topic">
<h3>user-defined routing; <em>UDR</em></h3>

<p>IN capability which allows the subscriber to specify how outgoing calls, from the subscriber's location, shall be routed, either through private, public, or virtual facilities or a mix of facilities, according to the subscriber's routing preference list. These lists will apply to individual lines or to several lines at the subscriber's location.</p>
</div>


<a name="id014914" shape="rect"></a>
<div class="topic">
<h3>user-initiated modification indication; <em>UIMI</em></h3>

<p>parameter given at the call set-up, allowing the user to modify the number of channels used during the call</p>
</div>


<a name="p2xhtm-repid-18972" shape="rect"></a>
<div class="topic">
<h3>user-network access</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id04056#id04056" onclick="sync(this);return true" shape="rect">See user access</a></p>
</div>


<a name="id03154" shape="rect"></a>
<div class="topic">
<h3>user-network interface; <em>UNI</em></h3>

<p>interface between the terminal equipment and a network termination at which interface the access protocols apply</p>
</div>


<a name="id07535" shape="rect"></a>
<div class="topic">
<h3>user-network interface only deactivation</h3>

<p>deactivation of the user-network interface which does not deactivate the digital line transmission system</p>
</div>


<a name="id010532" shape="rect"></a>
<div class="topic">
<h3>user-specific restrictions</h3>

<p>measures that have been taken to restrict the authority of a user to enter command parameter values in the system</p>
</div>


<a name="id05591" shape="rect"></a>
<div class="topic">
<h3>user-to-user information; <em>UUI</em></h3>

<p>information to be transmitted by means of user-to-user signalling</p>
</div>


<a name="id012334" shape="rect"></a>
<div class="topic">
<h3>user-to-user information message; <em>USR</em></h3>

<p>signalling message used in the transportation of user-to-user signalling independent of call control messages</p>
</div>


<a name="p2xhtm-repid-18978" shape="rect"></a>
<div class="topic">
<h3>user-to-user signaling /US/</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id03370#id03370" onclick="sync(this);return true" shape="rect">See user-to-user signalling</a></p>
</div>


<a name="id03370" shape="rect"></a>
<div class="topic">
<h3>user-to-user signalling; <em>user to user signalling</em>; <em>user-to-user signaling /US/</em>; <em>UUS</em></h3>

<p>service which allows an ISDN user to send a limited amount of information to another ISDN user or to receive information from another ISDN user</p>
</div>


<a name="id013260" shape="rect"></a>
<div class="topic">
<h3>user-to-user signalling, service 1; <em>UUS 1</em></h3>

<p>user-to-user signalling (UUS) where the user-to-user information can be sent and received during the originating and terminating of calls</p>
</div>


<a name="id013261" shape="rect"></a>
<div class="topic">
<h3>user-to-user signalling, service 2; <em>UUS 2</em></h3>

<p>user-to-user signalling (UUS) where user-to-user information can be sent and received after the calling user has received an indication that the called user is being informed of the call, and prior to the establishment of the connection</p>
</div>


<a name="id013262" shape="rect"></a>
<div class="topic">
<h3>user-to-user signalling, service 3; <em>UUS 3</em></h3>

<p>user-to-user signalling (UUS) where user-to-user information can be sent and received only while the connection is established</p>
</div>


<a name="id03996" shape="rect"></a>
<div class="topic">
<h3>user-user protocol</h3>

<p>protocol that is adopted between two or more users in order to ensure communication between them</p>
</div>


<a name="p2xhtm-repid-18984" shape="rect"></a>
<div class="topic">
<h3>username</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id07382#id07382" onclick="sync(this);return true" shape="rect">See user name</a></p>
</div>


<a name="p2xhtm-repid-18985" shape="rect"></a>
<div class="topic">
<h3>USIM</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010176#id010176" onclick="sync(this);return true" shape="rect">See UMTS subscriber identity module</a></p>
</div>


<a name="p2xhtm-repid-18986" shape="rect"></a>
<div class="topic">
<h3>USM</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010031#id010031" onclick="sync(this);return true" shape="rect">See user-based security model</a></p>
</div>


<a name="p2xhtm-repid-18987" shape="rect"></a>
<div class="topic">
<h3>USR</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012334#id012334" onclick="sync(this);return true" shape="rect">See user-to-user information message</a></p>
</div>


<a name="p2xhtm-repid-18988" shape="rect"></a>
<div class="topic">
<h3>USSD</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id09191#id09191" onclick="sync(this);return true" shape="rect">See unstructured supplementary service data</a></p>
</div>


<a name="id013255" shape="rect"></a>
<div class="topic">
<h3>USSD CAMEL subscription information; <em>U-CSI</em></h3>

<p>CAMEL subscription information which identifies a set of subscriber-specific mappings from an unstructured supplementary service data (USSD) service code to a GSM service control function (gsmSCF) address</p>
</div>


<a name="p2xhtm-repid-18990" shape="rect"></a>
<div class="topic">
<h3>USSD center /US/</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012036#id012036" onclick="sync(this);return true" shape="rect">See unstructured supplementary service data centre</a></p>
</div>


<a name="p2xhtm-repid-18991" shape="rect"></a>
<div class="topic">
<h3>USSD centre</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012036#id012036" onclick="sync(this);return true" shape="rect">See unstructured supplementary service data centre</a></p>
</div>


<a name="id016820" shape="rect"></a>
<div class="topic">
<h3>USSD centre billing interface</h3>

<p>billing interface via which the operator can collect charging data of unstructured supplementary service (USSD) traffic directly from the USSD centre log files and transfer the data to the billing centre</p>
</div>


<a name="id016821" shape="rect"></a>
<div class="topic">
<h3>USSD dialogue control protocol; <em>UDCP</em></h3>

<p>protocol that runs on top of the unstructured supplementary service data (USSD) dialogue and hides some of the USSD-specific characteristics from the layers above</p>
</div>


<a name="id013256" shape="rect"></a>
<div class="topic">
<h3>USSD general CAMEL service information; <em>general USSD CAMEL subscription information</em>; <em>UG-CSI</em></h3>

<p>CAMEL subscription information which identifies a set of mappings from an unstructured supplementary service data (USSD) service code to a GSM service control function (gsmSCF) address</p>
</div>


<a name="id013894" shape="rect"></a>
<div class="topic">
<h3>USSD message</h3>

<p>message delivered over a signalling channel via a mobile network using unstructured supplementary service data (USSD)</p>
</div>


<a name="id016786" shape="rect"></a>
<div class="topic">
<h3>USSD redirector</h3>

<p>feature which bundles services created by a platform under an interactive menu-based single access point, and enables the operators to introduce an unstructured supplementary service data (USSD) centre into their network</p>
</div>


<a name="p2xhtm-repid-18997" shape="rect"></a>
<div class="topic">
<h3>USSDC</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id012036#id012036" onclick="sync(this);return true" shape="rect">See unstructured supplementary service data centre</a></p>
</div>


<a name="p2xhtm-repid-18998" shape="rect"></a>
<div class="topic">
<h3>UT</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id09187#id09187" onclick="sync(this);return true" shape="rect">See untitled build</a></p>
</div>


<a name="p2xhtm-repid-18999" shape="rect"></a>
<div class="topic">
<h3>UTF</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id014152#id014152" onclick="sync(this);return true" shape="rect">See Unicode transformation format</a></p>
</div>


<a name="id014153" shape="rect"></a>
<div class="topic">
<h3>UTF-16</h3>

<p>character encoding standard that assumes 16-bit code values and allows for a certain range of characters to be used as an extension mechanism in order to access an additional million characters using 16-bit character pairs (thus extending Unicode)</p>
</div>


<a name="id014154" shape="rect"></a>
<div class="topic">
<h3>UTF-8; <em>UTF8</em></h3>

<p>character-encoding standard that transforms all Unicode characters into a variable length encoding of bytes</p>
</div>


<a name="p2xhtm-repid-19002" shape="rect"></a>
<div class="topic">
<h3>UTF8</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id014154#id014154" onclick="sync(this);return true" shape="rect">See UTF-8</a></p>
</div>


<a name="id011679" shape="rect"></a>
<div class="topic">
<h3>utilisation KPI</h3>

<p>key performance indicator that indicates the percentage of transferred octets compared to the maximum capacity through an interface</p>
</div>


<a name="p2xhtm-repid-19004" shape="rect"></a>
<div class="topic">
<h3>UTOPIA</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id09798#id09798" onclick="sync(this);return true" shape="rect">See universal test &amp; operations interface for ATM</a></p>
</div>


<a name="p2xhtm-repid-19005" shape="rect"></a>
<div class="topic">
<h3>UTRA</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010828#id010828" onclick="sync(this);return true" shape="rect">See UMTS terrestrial radio access</a></p>
</div>


<a name="id012819" shape="rect"></a>
<div class="topic">
<h3>UTRA radio access mode</h3>

<p>radio access mode selected for UMTS terrestrial radio access (UTRA)</p>
</div>


<a name="p2xhtm-repid-19007" shape="rect"></a>
<div class="topic">
<h3>UTRAN</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010144#id010144" onclick="sync(this);return true" shape="rect">See UMTS terrestrial radio access network</a></p>
</div>


<a name="id011490" shape="rect"></a>
<div class="topic">
<h3>UTRAN access point</h3>

<p>logical point within the UMTS terrestrial radio access network (UTRAN) performing radio transmission and reception and associated with one specific cell</p>
</div>


<a name="id012811" shape="rect"></a>
<div class="topic">
<h3>UTRAN radio network temporary identifier; <em>U-RNTI</em></h3>

<p>unique mobile station (MS) identifier that consists of a SRNC (serving radio network controller) temporary identifier (S-RNTI) and a cell radio network temporary identifier (C-RNTI)</p>
</div>


<a name="id011491" shape="rect"></a>
<div class="topic">
<h3>UTRAN registration area; <em>user registration area</em>; <em>URA</em></h3>

<p>predefined group of cells which the radio network controller (RNC) radio resource control uses to administer the location of the mobile station (MS)</p>
</div>


<a name="p2xhtm-repid-19011" shape="rect"></a>
<div class="topic">
<h3>UTRAN registration area updating</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id011488#id011488" onclick="sync(this);return true" shape="rect">See URA updating</a></p>
</div>


<a name="p2xhtm-repid-19012" shape="rect"></a>
<div class="topic">
<h3>UTS</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id019383#id019383" onclick="sync(this);return true" shape="rect">See user traffic server</a></p>
</div>


<a name="p2xhtm-repid-19013" shape="rect"></a>
<div class="topic">
<h3>UTSI</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id09185#id09185" onclick="sync(this);return true" shape="rect">See user to service information</a></p>
</div>


<a name="p2xhtm-repid-19014" shape="rect"></a>
<div class="topic">
<h3>UTU</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id03370#id03370" onclick="sync(this);return true" shape="rect">See user-to-user signalling</a></p>
</div>


<a name="p2xhtm-repid-19015" shape="rect"></a>
<div class="topic">
<h3>Uu</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id010145#id010145" onclick="sync(this);return true" shape="rect">See Uu interface</a></p>
</div>


<a name="id010145" shape="rect"></a>
<div class="topic">
<h3>Uu interface; <em>Uu</em></h3>

<p>radio interface between the UMTS terrestrial radio access network (UTRAN) and user equipment (UE)</p>
</div>


<a name="p2xhtm-repid-19017" shape="rect"></a>
<div class="topic">
<h3>UUI</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id05591#id05591" onclick="sync(this);return true" shape="rect">See user-to-user information</a></p>
</div>


<a name="p2xhtm-repid-19018" shape="rect"></a>
<div class="topic">
<h3>UUS</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id03370#id03370" onclick="sync(this);return true" shape="rect">See user-to-user signalling</a></p>
</div>


<a name="p2xhtm-repid-19019" shape="rect"></a>
<div class="topic">
<h3>UUS</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id021031#id021031" onclick="sync(this);return true" shape="rect">See unusable seconds</a></p>
</div>


<a name="p2xhtm-repid-19020" shape="rect"></a>
<div class="topic">
<h3>UUS 1</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id013260#id013260" onclick="sync(this);return true" shape="rect">See user-to-user signalling, service 1</a></p>
</div>


<a name="p2xhtm-repid-19021" shape="rect"></a>
<div class="topic">
<h3>UUS 2</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id013261#id013261" onclick="sync(this);return true" shape="rect">See user-to-user signalling, service 2</a></p>
</div>


<a name="p2xhtm-repid-19022" shape="rect"></a>
<div class="topic">
<h3>UUS 3</h3>

<p><a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id013262#id013262" onclick="sync(this);return true" shape="rect">See user-to-user signalling, service 3</a></p>
</div>


<a name="id013263" shape="rect"></a>
<div class="topic">
<h3>UUS not required request</h3>

<p>service request where the originating of a call is continued even if the request for the user-to-user signalling (UUS) cannot be accepted</p>
</div>


<a name="id013264" shape="rect"></a>
<div class="topic">
<h3>UUS required request</h3>

<p>service request where the originating of a call is rejected if the request for the user-to-user signalling (UUS) cannot be accepted</p>
</div>
</div>
</div>
</body>
</html>