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

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<h3>X display manager control protocol; <em>XDMCP</em></h3>

<p>protocol used to communicate between x-terminals and workstations running the UNIX operating system</p>
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<h3>x-terminal</h3>

<p>graphical terminal that allows a user simultaneous access to several different applications and resources in a multivendor environment through implementation of X Windows protocol</p>
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<h3>X.21</h3>

<p>physical interface between the data terminal equipment and data circuit equipment for synchronous operation on a public switched telephone network (PSTN)</p>
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<h3>x.25</h3>

<p>interface between data terminal equipment (DTE) and data circuit-terminating equipment (DCE) for terminals operating in the packet mode in the packet switched network and connected to public data networks by dedicated circuit</p>
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<h3>X.25 level 3 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=id011835#id011835" onclick="sync(this);return true" shape="rect">See packet level protocol</a></p>
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<h3>X.25 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=id011835#id011835" onclick="sync(this);return true" shape="rect">See packet level protocol</a></p>
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<h3>X.400</h3>

<p>e-mail and message transfer standard which enables different electronic mail systems to exchange messages</p>
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<h3>X.500</h3>

<p>standard for directory services that permits applications to access information which can be either centralised or distributed</p>
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<h3>X.509 certificate</h3>

<p>certificate which binds an entity's distinguished name to its public key through the use of a digital signature according to the ITU-T Recommendation X.509</p>
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<h3>X/open transport interface; <em>XTI</em></h3>

<p>protocol used between the base station controller (BSC) and the cell broadcast centre (CBC), which uses the services of the OSI Transport Layer</p>
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<h3>X/Open Transport Interface; <em>XTI</em></h3>

<p>standard specification for a function library providing an interface for OSI transport services</p>
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<h3>X400</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=id011888#id011888" onclick="sync(this);return true" shape="rect">See X.400</a></p>
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<h3>Xc</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=id018630#id018630" onclick="sync(this);return true" shape="rect">See Xc interface</a></p>
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<h3>Xc interface; <em>Xc</em></h3>

<p>interface for service and subscriber specific operations between service and subscription repository (SSR) and service execution environment (SEE)</p>
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<h3>XCAP</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=id020818#id020818" onclick="sync(this);return true" shape="rect">See XML configuration access protocol</a></p>
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<h3>XDMCP</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=id019430#id019430" onclick="sync(this);return true" shape="rect">See X display manager control protocol</a></p>
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<a name="p2xhtm-repid-19712" shape="rect"></a>
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<h3>xDSL</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=id08716#id08716" onclick="sync(this);return true" shape="rect">See digital subscriber line</a></p>
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<h3>XHTML; <em>extensible hypertext markup language</em></h3>

<p>hypertext markup language (HTML) to which new elements and attributes can be defined and added and that is an application of extensible markup language (XML)</p>
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<h3>XID</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=id011317#id011317" onclick="sync(this);return true" shape="rect">See exchange identity</a></p>
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<h3>XML; <em>extensible markup language</em></h3>

<p>subset of standard generalised markup language (SGML), which describes a class of data objects called XML documents and partially describes the behaviour of computer programs which process them</p>
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<h3>XML API</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=id015811#id015811" onclick="sync(this);return true" shape="rect">See XML application programming interface</a></p>
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<a name="id015811" shape="rect"></a>
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<h3>XML application programming interface; <em>XML API</em></h3>

<p>application programming interface to the services which the XML processor provides</p>
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<h3>XML attribute; <em>attribute</em>; <em>attribute object</em></h3>

<p>qualifier on an XML tag that provides additional information</p>
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<h3>XML configuration access protocol; <em>XCAP</em></h3>

<p>protocol that allows a client to read, write, and modify application configuration data stored in XML format on a server</p>
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<h3>XML configuration file</h3>

<p>configuration file which is in XML format</p>
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<h3>XML editing</h3>

<p>feature which provides tools for taking extensible markup language (XML) files from the system for editing and bringing the edited files back to the system, as well as for the editing itself</p>
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<a name="id015815" shape="rect"></a>
<div class="topic">
<h3>XML element; <em>element</em>; <em>element object</em></h3>

<p>unit of XML data, delimited by tags, which can contain other elements and have attributes</p>
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<div class="topic">
<h3>XML file format for statistics</h3>

<p>feature that provides performance management information in XML files sent for post-processing</p>
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<div class="topic">
<h3>XML formatting library</h3>

<p>feature offering generic XML formatting services via a library module, which facilitates the implementation of conversion programs and harmonises the produced XML format</p>
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<div class="topic">
<h3>XML interface</h3>

<p>interface that enables the exchange of extensible markup language (XML) formatted data</p>
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<h3>XML over HTTP; <em>XoH</em></h3>

<p>protocol that enables the collection of notifications about local events in the network elements, converts them into extensible markup language (XML) format, and uses the hypertext transfer protocol (HTTP) to send them to the network management system</p>
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<a name="id015347" shape="rect"></a>
<div class="topic">
<h3>XML parser; <em>extensible markup language parser</em></h3>

<p>parser that reads extensible markup language (XML) files and generates a hierarchically structured tree, then hands off data to viewers and other applications for processing</p>
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<a name="id015739" shape="rect"></a>
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<h3>XML Parser Toolkit; <em>Expat</em>; <em>EXPAT</em></h3>

<p>XML parser for C language, used to add XML support to Netscape 5 and Perl</p>
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<a name="id020604" shape="rect"></a>
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<h3>XML path language; <em>Xpath</em></h3>

<p>language that describes ways to locate and process items in XML documents by using an addressing syntax based on a path through the document's logical structure or hierarchy</p>
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<a name="id015853" shape="rect"></a>
<div class="topic">
<h3>XML printer</h3>

<p>feature which provides the XML reports in readable format</p>
</div>


<a name="id09932" shape="rect"></a>
<div class="topic">
<h3>XML processor</h3>

<p>software module which is used to read XML documents and provide access to their content and structure</p>
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<div class="topic">
<h3>XML schema</h3>

<p>formal specification of element names that is used to predefine and restrict the content of an extensible markup language (XML) file by indicating the allowed elements</p>
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<div class="topic">
<h3>XML template</h3>

<p>set of rules indicating how DMX messages are converted to extensible markup language (XML)</p>
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<div class="topic">
<h3>XML-based notification handling system; <em>XMLBNHS</em></h3>

<p>feature which enables collecting notifications about local events in network elements, converting them into XML format, and sending them to a management system using HTTP</p>
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<a name="p2xhtm-repid-19735" shape="rect"></a>
<div class="topic">
<h3>XMLBNHS</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=id015514#id015514" onclick="sync(this);return true" shape="rect">See XML-based notification handling system</a></p>
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<h3>XoH</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=id015346#id015346" onclick="sync(this);return true" shape="rect">See XML over HTTP</a></p>
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<h3>Xpath</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=id020604#id020604" onclick="sync(this);return true" shape="rect">See XML path language</a></p>
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<h3>XPD</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=id06210#id06210" onclick="sync(this);return true" shape="rect">See cross-polarisation discrimination</a></p>
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<a name="p2xhtm-repid-19739" shape="rect"></a>
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<h3>XRES</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=id018629#id018629" onclick="sync(this);return true" shape="rect">See expected user response</a></p>
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<h3>XSL</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=id014157#id014157" onclick="sync(this);return true" shape="rect">See extensible stylesheet language</a></p>
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<div class="topic">
<h3>XSLT</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=id016844#id016844" onclick="sync(this);return true" shape="rect">See extensible stylesheet language transformations</a></p>
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<div class="topic">
<h3>XSP</h3>

<p>generic abbreviation for various different service provider types</p>
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<a name="p2xhtm-repid-19743" shape="rect"></a>
<div class="topic">
<h3>XTI</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=id011271#id011271" onclick="sync(this);return true" shape="rect">See X/open transport interface</a></p>
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<a name="p2xhtm-repid-19744" shape="rect"></a>
<div class="topic">
<h3>XTI</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=id015388#id015388" onclick="sync(this);return true" shape="rect">See X/Open Transport Interface</a></p>
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<div class="topic">
<h3>XUDT</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=id015938#id015938" onclick="sync(this);return true" shape="rect">See extended unitdata</a></p>
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<a name="p2xhtm-repid-19746" shape="rect"></a>
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<h3>XUDTS</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=id015939#id015939" onclick="sync(this);return true" shape="rect">See extended unitdata service</a></p>
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