Glossary of Terms and Acronyms
MTAS
Contents
| 1 | Introduction |
| 1.1 | Related Information |
2 | Terms and Definitions |
| 2.1 | A-E |
| 2.2 | F-K |
| 2.3 | L-P |
| 2.4 | Q-T |
| 2.5 | U-Z |
Glossary | |
1 Introduction
This document is a summary of known abbreviations and terminology used by other documents to describe the MTAS Customer Product Information (CPI).
The defined terms, definitions, acronyms, and abbreviations are sorted in alphabetical order. Some abbreviations can have more than one definition.
General telecommunication vocabulary can be found at Institute for Telecommunication Sciences' (ICS) home page.
General telecommunication vocabularies are described at the following URL:
Other sources for glossary are available in the following home pages:
Other sources for glossary are available at the following URLs:
Scope
This document does not cover the following:
- General abbreviations, acronyms, and terminology understood as well-known concepts defined by external glossaries. For example, general IP technology acronyms and terminology or general telecommunication acronyms and terminology, unless the MTAS narrows the scope or changes the meaning.
- Protocol details. The reader is recommended to read the protocol itself for further details.
Target Groups
This document is intended for anyone who wants more knowledge about terms and definitions used in the CPI, describing the MTAS node.
1.1 Related Information
For information on trademarks, typographic conventions, definition, and explanation of abbreviations and terminology, refer to Trademark Information.
2 Terms and Definitions
The following sections define the terms and definitions used in the MTAS CPI.
2.1 A-E
| ATCF | Access Transfer Control Function. Node that acts as a B2BUA between a circuit switched network and the IMS core network. The ATCF coordinate the access transfer of a session between access and circuit switched networks. | |
| ATGW | Access Transfer Gateway. Node that handles the media transport on the boundary between the circuit switched and IMS core networks as defined by 3GPP architecture and procedures. The ATCF controls the ATGW using H.248. | |
| ATU-STI | Access Transfer Update - Session Transfer Identifier. Routable URI (SIP URI or E.164 number) pointing to SCC AS. It is a statically configured URI in SCC AS node. | |
| Action | An executable operation triggered by setting attributes on an MO. Each action is defined in the related MOC description. | |
| Activation | An action taken by a user or by a service provider to change the state of a service from inactive to active. | |
| Alarm | Raised by the system to indicate an unexpected
behavior of malfunction requiring corrective action by the user. An
alarm has at least state raise (initial detection of the fault) or
clear (when the fault no longer exists). An alarm can also change
state regarding perceived severity. Alarms are also called "stateful" alarms to emphasize that they have a state. An active
alarm is an alarm that has been raised but not cleared. All alarm state changes including cleared state are recorded in the Alarm Log. Each alarm has an alarm Operating Instructions document. It describes the possible fault reasons, fault locations, and the potential service impact. It also describes the procedure to execute to eliminate the problem and eventually clear the alarm. | |
| Alert | A stateless alarm, that is, an alarm that can only have the raised state. As an alarm, an alert has an associated Operating Instructions document and is reported in real time as an SNMP notification. Alerts are recorded in the Alert Log but are not exposed in any list over the NBI. | |
| Alias Role | Identity of a role, which has meaning to the user. An alias role is an alias for one or more real roles. The definition of alias role allows the user to use names of roles that the user is used to. Also, the same alias can be used for several real roles. The latter can be useful when different types of MEs have defined real roles with different names, but which requires the same (or similar) authority. | |
| Application | A service enabler deployed by service providers, manufacturers, or users. Individual applications are often enablers for a wide range of services. Defined in 3GPP TR 21.905. | |
| API | Application Programming Interface. A formalized set of software calls and routines that can be referenced by an application program to access supporting network services. | |
| Arwa | Arwa is a Heartbeat license management solution. | |
| Attribute | Represents the configuration. The read-only attributes in the MOs describe configuration state and operational values. The writable attributes control the operation and configuration for the particular network resource. Each attribute is defined in the related MOC description. | |
| AVP | Attribute-Value Pair. A data representation in an application. Diameter AVPs carry specific authentication, authorization, and accounting information, security information as well as configuration details for the request and the reply. | |
| Authentication | The process of verifying the identity of an entity. | |
| Authorization | The granting of permission based on authenticated identification. | |
| BE | Best Effort QoS. A QoS traffic class which provides minimal performance guarantees, allowing an unspecified variance in the measured performance criteria. | |
| CNIP | Calling Name Identity Presentation. The Calling Name Identity Presentation service alters the originating identity presented in a communication based on the preferences of the participants and information retrieved from an external node outside IMS. | |
| CSCF | Call Session Control Function. Several roles of SIP servers or proxies that are collectively called Call Session Control Function (CSCF). These are used to process SIP signalling packets in the IMS. See Proxy Call Session Control Function, Interrogating Call Session Control Function, and Serving Call Session Control Function for details regarding the different CSCF types within IMS. | |
| Cardinality | The number of elements in a set. Two
sets with the same number of elements have the same cardinality. Can exist in the MOM between MOs in parent-child relationships, and in associations between MOs. | |
| Charging | The process of gathering Charging input by serving elements, transferring it to Charging Control, processing of this information, by Charging Control and distributing the result of this processing to involved parties. | |
| Complex activation/deactivation | A state of a service that can be changed by a user using Ut interface. | |
| CPI | Customer Product Information. Documentation for an ME, delivered in the Active Library Explorer. | |
| CSR | Customer Service Request. Used during the trouble reporting process to describe the problems identified. | |
| CAI3G | Customer Administration Interface Third Generation. An Ericsson-defined SOAP-based protocol for provisioning. | |
| Data Check | The interrogation function that compares data input by a user during an interrogation procedure with the data stored about a service. | |
| Data Model | A mapping of the contents of an Information Model into a form that is specific to a particular type of data store or repository. A data model is basically the rendering of an information model according to a specific set of mechanisms for representing, organizing, storing, and handling data. In contrast to an Information Model, a Data Model includes implementation (and protocol-) specific details. That is, rules that explain how to map MOs onto lower-level protocol constructs. | |
| Deactivation | An action taken by a user (or by a service provider) to change the status of a service from active to inactive. | |
| Derived Data Type | Data type enhanced with extra restrictions and properties. Derived string data types contain, for example, length and content constraints. Derived integer data types contain extra range constraints. Each derived data type is defined in the related MOC description. | |
| Dh | The name of the interface reference point between the SLF and the SIP AS. | |
| DN | Distinguished Name. The name of an object or an object tree that is shared between the system and the Management System. The DN is in 3GPP format (from root to leave). The DN is used to identify an MO uniquely in the system. It gives the path of the MO in the tree of objects. The system uses 3GPP formatted DNs where each relative DN part consists of the MOC name equal the MO identity. If the key attribute name is not equal to the MOC name plus ID, then the key attribute name is also appended to the MOC name separated by a dot. | |
| ECIM | Ericsson Common Information Model. Controls the MOM structure. The ECIM is based on the CIM standard. | |
| ECLI | Ericsson Command-Line Interface. A terminal-based command-line interface that is used to monitor and manage the ME. The ECLI is based on industry de facto standard patterns. | |
| Embedded tel URI | Embedded tel URI implies the tel URI <local-number> along with the phone-context or tel URI <global-number> parts are embedded between the “:”, and “@” characters in a SIP URI. | |
| Enumeration | Integer-name pairs defining a fixed set of named values for an attribute, return value, or action parameter. Each enumeration is defined in the MOM. | |
| Erasure | An action taken by a user (or by a service provider) to delete data stored for a particular service by a previous registration. | |
| Ericsson NETCONF Interface | A machine to machine interface for configuration management of the ME using the NETCONF protocol over the Secure Shell. | |
| Event | Occurrence of significance to users, the MEs under surveillance and network management specifications. Events do not have states. | |
| Erasure | An action taken by a user (or by a service provider) to delete data stored for a particular service by a previous registration. | |
| XML | Extensible Markup Language. Markup language that describes data formats and the information model. XML represents structured data in textual form, and is similar in concept to HTML. | |
2.2 F-K
| GP | Granularity Period. The time between the initiation of two successive gatherings of measurement data. | |
| GSM Compatible SSF | The GSM Compatible SSF feature introduces an integrated SSF function supporting CAPv2 protocol. This function makes it possible to support legacy IN services already available in existing service layer when introducing Voice over LTE with MMTel. | |
| HA | High Availability. A system or component that is continuously operational for a desirably long length of time. Availability is measured relative to 100% operational status. | |
| Heartbeats | Used by a Management System to monitor the interface over which the alarms or alerts are to be sent. Heartbeats are needed because a management system cannot assume that a "silent" ME behaves properly. The Heartbeat event is reported as an SNMP notification at regular intervals. | |
| HSS | Home Subscriber Server. An IMS database that contains the subscription-related information (subscriber profiles), performs authentication and authorization of the user, and can provide information about the location of the subscriber and IP information. | |
| ICS Enhanced MSC | An MSC with extra ICS functionality such as interworking functionality between CS and IMS for an ICS user the CS user-network signaling interworking with IMS/SIP signaling for bearer control. | |
| ICS UE | The VoLTE UE with extra ICS-specific functionality such as service control communication with SCC AS (over Gm or I1), executes ADS for originating sessions, assists SCC AS in T-ADS. | |
| ICS User | An IMS subscriber that uses IMS Centralized Services as service domain regardless of the access type, CS, or PS. | |
| ICS | IMS Common System. A common base for both wireline and wireless applications on which operators can introduce their IMS services. | |
| ISC | IMS Service Control Interface. The ISC interface is able to support subscription of event notifications between the AS and the S-CSCF to allow the AS to be notified of the implicit registered Public User Identities, registration state, and UE capabilities. Defined in 3GPP TS 23.228. | |
| IMS Voice over PS support | The PS access network supports bidirectional speech media. | |
| Information Model | An abstraction and representation of the entities (or MOs) in a managed environment, their properties, attributes, and operations, as well as the way that they relate to each other. It is independent of any specific repository, software use, protocol, or platform. | |
| Interrogation | An action taken by a user to request information from a service provider about a particular service. The interrogation function includes Status Check, Data Request, and Data Check. | |
| Invocation | An action taken by a user, on a per call basis, to start (for example, temporarily activate) a supplementary service. | |
2.3 L-P
| Load Balancing | A feature that balances the load over a cluster of processors. It exposes only one IP address for the control plane independent of the number of processors configured to handle traffic to or from that network. | |
| LOTC | Linux Open Telecom Cluster. Provides a Linux cluster with High Availability characteristics. The system is an adapted and preconfigured version of the SUSE Linux Enterprise Server (SLES) distribution with added cluster level tooling and services. | |
| Man–Machine Interface | The interface through which a user communicates with a telecommunications terminal or through a telecommunications terminal to a telecommunication service provider. | |
| Managed Object Management | A folder in the Active Library Explorer that contains the MOM. | |
| Marshalling | Marshalling is the process of transforming the memory representation of an object to a data format suitable for storage or transmission (similar to serialization). It is typically used when data must be moved between different parts of a computer program or from one program to another. | |
| ME | Managed Element. An entity that supports the management functionality needed for a specific resource that can be one or more of: network components, host systems, or applications. Managed objects are conceptual views of said resources that are being managed or exist to support management such as event logging. Therefore, a Managed Object is an abstraction of such a resource that represents its properties as seen by (and for the purposed of) management. An MO can also represent a relationship between a resource or a set of resources. A Managed Object is defined by the attributes visible at its boundary, the management operations which can be applied to it, the behavior exhibited by it in response to management operations or in reaction to other types of stimuli. These can be either internal (for example, threshold crossing) or external (for example, interaction with other objects), or notifications emitted by it. | |
| MIB | Management Information Base. A set of managed objects in a management domain, together with their attributes, constitutes that management MIB of the domain. MIB is also used in SNMP for trap and counter-definition. | |
| MIM | Management Information Model. A view of the MOM, where certain parts of the MOM can be hidden from the user, depending on the use case. The MOM is traditionally stored offline, while a MIM is traditionally stored online for use by tools. Often the MIM is represented in a different language to the MOM, for example, XML. There is normally one file, in whatever modeling format, per MIM. The cardinality between a MOM and a MIM is one to one. | |
| MO | Managed Object. A software object that encapsulates the manageable characteristics and behavior of a particular hardware or software resource. An MO is an instance of a MOC. An MO normally has attributes that provide information used to characterize the MOs that belong to the MOC. An MO can also have actions that allow the user to perform operations on the underlying implementation. | |
| MOC | Managed Object Class. A description of all the common characteristics for several Managed Objects, such as their attributes, operations, notifications, and behaviors. | |
| MOM | Managed Object Model. A structured collection of configuration information that defines the O&M capability on an ME. The MOM is defined as a set of MOCs. The MOCs contain attributes representing the configuration that can be performed by the user, and actions representing the operations that can be started by the user. The MOM is a static blueprint for the creation of the actual object model. | |
| MMTel | Multimedia Telephony, one of the IMS Service formats that provide the user with services belonging to the telephony service format. | |
| MMTel session | A Multimedia Telephony SIP session. | |
| NBI | Northbound Interface. The interface to a Management System and a CLI client. The protocols used are ECLI, NETCONF, SFTP, and SNMP. | |
| NETCONF | Network Configuration. A network management protocol developed in the IETF and published as RFC 4741. | |
| NFS | Network File System. The NFS server disk is visible as local. | |
| Notification | A general term for a message that carries an alarm or alert instance. | |
| Offline Charging | 3GPP term: A mechanism where Charging information does not affect, in real time, the service rendered (3GPP TS 32.260). | |
| Online Charging | 3GPP term: A mechanism where Charging information can affect, in real time, the service rendered, and therefore a direct interaction of the Charging mechanism with session/service control is required (3GPP TS 32.260). | |
| Originating session | A session handled on behalf of an originating user. | |
| PAI | P-Asserted-Identity. A header field that contains a URI (commonly a SIP URI) and an optional display-name. The header field is used among trusted SIP entities (typically intermediaries) to carry the identity of the user sending a SIP message as it was verified by authentication. | |
| PM | Performance Management. A functional area for collection and configuration of performance data. | |
| PMF | Performance Management Framework. A single framework to report and manage performance measurements. | |
| P-Header | Private Header | |
| PUI | Public User Identity. An identity used within the home domain of an IMS network to uniquely identify a user profile. It is the address used for establishing a session to the user. The PUI has the form of either a SIP URI or a tel URI. Defined in 3GPP TS 23.003. | |
2.4 Q-T
| Registration | An action taken by a user (or by a service provider) to store specific data necessary to enable subsequent operation of a service. | |
| Rf | The name of the interface reference point between the SIP AS and the CDF. | |
| Ro | The name of the interface reference point between the SIP AS and the OCF. | |
| Role | Equivalent to the user occupation within an organization, for example, System Administrator. A user can have one or more roles. | |
| Rule | Authorization rules specify the permissions to a set of resources within the ME. The authorization rules are grouped into roles. Authorization rules are defined locally on the ME. | |
| SDP | Software Delivery Package. An archive file (TAR file) with RPM® software packages and a file describing the Ericsson product data. A software item can be an SDP. A software item represents any kind of Ericsson software product that is present on the ME. | |
| Separator | A one-character string, the star (*) symbol, used within a command dialogue control action to separate two-digit strings. The digit strings can be a service code or a supplementary information string. | |
| SCC AS | Service Centralization and Continuity Application Server. The Service Centralization and Continuity Application Server is an application server in the home IMS network of the served UE supporting at least one of the SRVCC, SDS, or T-ADS functions. | |
| Service Code | A two or three digit string used within a command dialogue control action to identify a supplementary service. | |
| Service Code Prefix | A one or two character string preceding the service code and indicating which set of functions is to be applied to a service, within a command dialogue control action. | |
| SDS | Service Domain Selection. The Service Domain Selection function selects IMS as service domain for VoLTE UE originating at 2G/3G CS access. | |
| Serving Element | The role played by a system interacting with Charging control for Charging. | |
| Service Suffix | A one-character string (usually a square symbol #) used within a command dialogue control action to define the end of the command string. | |
| Session Charging | Method performing subsequent Charging requests during delivery of a service. Charging of a voice call is a typical example for use of session Charging. | |
| SDP | Session Description Protocol. Intended for describing multimedia sessions for the purposes of session announcement, session invitation, and other forms of multimedia session initiation. Defined in IETF RFC 2327. | |
| SF | System Functions. Common system functions and resources for the management entity such as Fault Management (Fm), Performance Management (Pm), and Security Management (SecM). SystemFunctions is one of the first-level branches in the MOM. | |
| Sh | The name of the interface reference point between the HSS and the SIP AS. | |
| SIP | Session Initiation Protocol. A signaling protocol for creating, modifying, and terminating sessions with one or more participants. Defined in IETF RFC 3261. | |
| STN-SR | Session Transfer Number - Single Radio.
A routable URI of E.164 format pointing to SCC AS using SRVCC R9 or
to the visited ATCF using SRVCC R10.
The following is a description of the SRVCC R9 and SRVCC R10 respectively: | |
| SIP URI | A SIP address. | |
| SRVCC | Single Radio Voice Call Continuity. The SRVCC function allows voice call continuity between IMS over PS access and CS access for calls that are anchored in IMS when the UE can transmit/receive on only one of those access networks at a given time. | |
| Status Check | The interrogation function that enables a user to request information on the existing status of a designated service. | |
| SCTP | Stream Control Transmission Protocol. A reliable transport protocol operating on top of IP. It provides acknowledged error free non-duplicated transfer of data. SCTP also detects data corruption, loss of data, and duplication of data by using checksums and sequence numbers. Defined in IETF RFC 2960. | |
| Struct | Handles structured attributes that can contain an arbitrary number of elements of the same or different type. Each struct is defined in the related MOC description. | |
| SUM | A subtype of performance measurements status inspection. | |
| Supplementary Service Functions | The collection of functions that are commonly applied in supplementary services including; Activation, Deactivation, Disabling, Erasure, Interrogation, Invocation, Provision, Registration, and Withdrawal. | |
| Syntax | The particular sequence of service prefix, service code, separator, supplementary information, service suffix, and so on, specified for a command dialogue information string. | |
| SysM | System Management. Represents the system-level functions such as time handling and version handling. SysM is a system function. | |
| Tel URI | A telephone address. | |
| T-ADS | Terminating Access Domain Selection. The Terminating Access Domain Selection (T-ADS) function is executed to select the terminating access domain for the VoLTE UE (CS or PS). The access domain is selected based on registered contacts data, on access type for ongoing VoLTE session and most recent VoLTE session, and on the T-ADS information (if the current location access network supports IMS Voice over PS) obtained from HSS. | |
| Terminating session | A session handled on behalf of a terminating user. | |
| Terminating unregistered session | A session handled on behalf of a terminating unregistered user. | |
| Registration | An action taken by a user (or by a service provider) to store specific data necessary to enable subsequent operation of a service. | |
| Rf | The name of the interface reference point between the SIP AS and the CDF. | |
| Ro | The name of the interface reference point between the SIP AS and the OCF. | |
| Role | Equivalent to the user occupation within an organization, for example, System Administrator. A user can have one or more roles. | |
| Rule | Authorization rules specify the permissions to a set of resources within the ME. The authorization rules are grouped into roles. Authorization rules are defined locally on the ME. | |
| SDP | Software Delivery Package. An archive file (TAR file) with RPM® software packages and a file describing the Ericsson product data. A software item can be an SDP. A software item represents any kind of Ericsson software product that is present on the ME. | |
| Separator | A one-character string, the star (*) symbol, used within a command dialogue control action to separate two-digit strings. The digit strings can be a service code or a supplementary information string. | |
| SCC AS | Service Centralization and Continuity Application Server. The Service Centralization and Continuity Application Server is an application server in the home IMS network of the served UE supporting at least one of the SRVCC, SDS, or T-ADS functions. | |
| Service Code | A two or three digit string used within a command dialogue control action to identify a supplementary service. | |
| Service Code Prefix | A one or two character string preceding the service code and indicating which set of functions is to be applied to a service, within a command dialogue control action. | |
| SDS | Service Domain Selection. The Service Domain Selection function selects IMS as service domain for VoLTE UE originating at 2G/3G CS access. | |
| Serving Element | The role played by a system interacting with Charging control for Charging. | |
| Service Suffix | A one-character string (usually a square symbol #) used within a command dialogue control action to define the end of the command string. | |
| Session Charging | Method performing subsequent Charging requests during delivery of a service. Charging of a voice call is a typical example for use of session Charging. | |
| SDP | Session Description Protocol. Intended for describing multimedia sessions for the purposes of session announcement, session invitation, and other forms of multimedia session initiation. Defined in IETF RFC 2327. | |
| SF | System Functions. Common system functions and resources for the management entity such as Fault Management (Fm), Performance Management (Pm), and Security Management (SecM). SystemFunctions is one of the first-level branches in the MOM. | |
| Sh | The name of the interface reference point between the HSS and the SIP AS. | |
| SIP | Session Initiation Protocol. A signaling protocol for creating, modifying, and terminating sessions with one or more participants. Defined in IETF RFC 3261. | |
| STN-SR | Session Transfer Number - Single Radio.
A routable URI of E.164 format pointing to SCC AS using SRVCC R9 or
to the visited ATCF using SRVCC R10.
The following is a description of the SRVCC R9 and SRVCC R10 respectively: | |
| SIP URI | A SIP address. | |
| SRVCC | Single Radio Voice Call Continuity. The SRVCC function allows voice call continuity between IMS over PS access and CS access for calls that are anchored in IMS when the UE is capable of transmitting/receiving on only one of those access networks at a given time. | |
| Status Check | The interrogation function that enables a user to request information on the existing status of a designated service. | |
| SCTP | Stream Control Transmission Protocol. A reliable transport protocol operating on top of IP. It provides acknowledged error free non-duplicated transfer of data. SCTP also detects data corruption, loss of data, and duplication of data by using checksums and sequence numbers. Defined in IETF RFC 2960. | |
| Struct | Handles structured attributes that can contain an arbitrary number of elements of the same or different type. Each struct is defined in the related MOC description. | |
| SUM | A subtype of performance measurements status inspection. | |
| Supplementary Service Functions | The collection of functions that are commonly applied in supplementary services including; Activation, Deactivation, Disabling, Erasure, Interrogation, Invocation, Provision, Registration, and Withdrawal. | |
| Syntax | The particular sequence of service prefix, service code, separator, supplementary information, service suffix, and so on, specified for a command dialogue information string. | |
| SysM | System Management. Represents the system-level functions such as time handling and version handling. SysM is a system function. | |
| Tel URI | A telephone address. | |
| T-ADS | Terminating Access Domain Selection. The Terminating Access Domain Selection (T-ADS) function is executed to select the terminating access domain for the VoLTE UE (CS or PS). The access domain is selected based on registered contacts data, on access type for ongoing VoLTE session and most recent VoLTE session, and on the T-ADS information (if the current location access network supports IMS Voice over PS) obtained from HSS. | |
| Terminating session | A session handled on behalf of a terminating user. | |
| Terminating unregistered session | A session handled on behalf of a terminating unregistered user. | |
| Transaction | Configuration changes are applied through atomic transactions. Thus, it is ensured that all or none of the operations are executed. | |
| Transport Management | Transport-related functions and resources, for example, load sharing between all configured and available blades in the cluster, and distribution of incoming traffic to the system. Transport is one of the first-level branches in the MOM. | |
| Trap | An unacknowledged SNMP message that carries a notification or heartbeat. | |
2.5 U-Z
| Unmarshalling | Unmarshalling is the process of transforming a data format representation of and object to its memory representation (similar to deserialization). It is typically used when data must be moved between different parts of a computer program or from one program to another. | |
| URI | Uniform Resource Identifier. A URI is a compact string of characters for identifying an abstract or physical resource. Defined in IETF RFC 2396. | |
| Upgrade | A product or product version that is created to provide an increased level of functionality or performance to a user. Upgrade is also the operation to replace a previous product or product version with a new product or product version that provides an increased level of functionality. | |
| UA | User Agent. An endpoint in a SIP-based network. | |
| UDP | User Datagram Protocol. Part of the TCP/IP protocol suite, UDP is a standard, connectionless, host-to-host protocol that is used over packet-switched computer communications networks. UDP is typically used for real-time applications. Defined in IETF RFC 768. | |
| Ut | An integration reference point between the client and XDMS. | |
| VoLTE UE | Voice over LTE capable UE (according to IR.92) with IMS as service domain. LTE supports 3GPP accesses and an Evolved Packet Core (EPC) interfacing the IMS core. | |
| XDMS | XML Document Management Server. A server that stores and manages XML documents on behalf of network applications. The XML documents often contain configuration data for application services, for example, MMTel subscriber configuration data for MTAS. An XDMS can store documents for multiple applications. Within each application, there are documents stored for each user. Each user can have multiple documents for a particular application. | |
Glossary
| 2PTY |
| Two Parties |
| 3DES |
| Triple Data Encryption Standard |
| 3G |
| Third Generation |
| 3GPP |
| 3rd Generation Partnership Project |
| 3GPP2 |
| 3rd Generation Partnership Project 2 |
| 3PCC |
| Third-Party Call Control |
| 3PP |
| Third Party Products |
| 3PTY |
| Three Party Service |
| AAA |
| Authentication, Authorization and Accounting |
| AbDial |
| Abbreviated Dialing |
| ABNF |
| Augmented Backus-Naur Form |
| AC |
| Area Code |
| ACA |
| Accounting Control Answer |
| ACR |
| Anonymous Communication Rejection | Accounting-Request | Accounting Control Request | Apply Charging Report |
| ADS |
| Access Domain Selection |
| AES |
| Advanced Encryption Standard |
| AGCF |
| Access Gateway Control Function |
| ALB |
| Abstract Load Balancer |
| AMF |
| Availability Management Framework |
| AN |
| Abbreviated Number |
| ANDUB |
| Approaching Network Determined User Busy |
| ANSI |
| American National Standards Institute |
| AoC |
| Advice of Charge |
| AoC-D |
| Advice of Charge During |
| AoC-E |
| Advice of Charge End |
| AoC-S |
| Advice of Charge Start |
| AOR |
| Address Of Record |
| API |
| Application Programming Interface |
| AppTrace |
| Application Trace |
| ARP |
| Address Resolution Protocol |
| AS |
| Application Server |
| ASCII |
| American Standard Code for Information Interchange |
| ATCF |
| Access Transfer Control Function |
| ATGW |
| Access Transfer Gateway |
| ATM |
| Asynchronous Transfer Mode |
| ATU |
| Access Transfer Update |
| ATU-STI |
| Access Transfer Update - Session Transfer Identification |
| AT&T |
| American Telephone & Telegraph |
| AuC |
| Additional User Category |
| AUID |
| Application Unique Identifier |
| AV |
| Audio Video |
| AVC |
| Attribute Value Change |
| AVP |
| Attribute-Value Pair | Audio-Visual Profile |
| AVPF |
| Audio-Visual Profile with Feedback |
| B2BUA |
| Back-to-Back User Agent |
| BB |
| Broad Band |
| BCI |
| Backward Call Indicator |
| BCSM |
| Basic Call State Model |
| BE |
| Best Effort QoS |
| BFD |
| Bidirectional Forwarding Detection |
| BFCP |
| Binary Floor Control Protocol |
| BICC |
| Bearer-Independent Call Control |
| BP |
| Barring Program |
| BRM |
| Back up and Restore Management |
| BSP |
| Blade Server Platform |
| BSS |
| Business Support System |
| C-MSISDN |
| Correlation Mobile Subscriber Integrated Services Digital Network |
| CA |
| Capsule Abortion | Charge Area |
| CAC |
| Call Admission Control | Carrier Access Code |
| CAI3G |
| Customer Administration Interface Third Generation |
| CAMEL |
| Customized Applications for Mobile Networks Enhanced Logic |
| CAP |
| CAMEL Application Part |
| CARI |
| Carrier Information |
| CAS |
| Conference Administration Server |
| CAT |
| Customized Alerting Tones |
| CAT-S |
| Customized Alerting Tones Server |
| CB |
| Communication Barring |
| CC |
| Call Completion | Cumulative Counter | Communication Completion | Conference Creator | Country Code |
| CC-AC |
| Country Code and Area Code |
| CCA |
| Credit Control Answer |
| CCBS |
| Communication Completion Busy Subscriber |
| CCF |
| Charging Collection Function |
| CCFH |
| Credit Control Failure Handling |
| CCMP |
| Centralized Conferencing Manipulation Protocol |
| CCNL |
| Call Completion Not Logged-in |
| CCNR |
| Communication Completion by No Reply |
| CCR |
| Credit Control Request |
| CD |
| Call Deflection | Communication Deflection |
| CDF |
| Charging Data Function |
| CDIV |
| Communication Diversion |
| CDIVAll |
| Communication Diversion All |
| CDIVN |
| Communication Diversion Notification |
| CDP |
| Charge Determination Point |
| CDR |
| Charging Data Record |
| CDS |
| Communication Details Server |
| CDTF |
| Communication Details Transfer Function |
| CEA |
| Capabilities-Exchange-Answer |
| CEPT |
| European Conference of Postal and Telecommunications Administrations |
| CER |
| Capabilities-Exchange-Request |
| CertM |
| Certificate Management |
| CFB |
| Communication Forwarding on Busy |
| CFBNRVM |
| Communication Forwarding on No Reply or Forwarding on Busy to Voice Mail |
| CFBVM |
| Communication Forwarding on Busy to Voice Mail |
| CFCOND |
| Communication Forwarding Conditional |
| CFNL |
| Communication Forwarding Not Logged in |
| CFNR |
| Communication Forwarding on No Reply |
| CFNRc |
| Communication Forwarding Not Reachable |
| CFNRVM |
| Communication Forwarding on No Reply to Voice Mail |
| CFP |
| Communication Forwarding on Presence |
| CFU |
| Communication Forwarding Unconditional |
| CFUVM |
| Communication Forwarding Unconditional to Voice Mail |
| CFx |
| Any of CFB, CFU, and CFNR |
| CGI |
| Cell Global Identification |
| CI |
| Charge Information |
| CIC |
| Carrier Identification Code |
| CIEC |
| Chosen Interexchange Carrier |
| CIM |
| Common Information Model |
| CIRp |
| Call Information Report |
| CIT |
| Charge Information Type |
| CLB |
| Converged SIP/HTTP Load Balancer |
| CLI |
| Command-Line Interface |
| CLM |
| Cluster Membership |
| CM |
| Configuration Management |
| CMCO |
| Common Component |
| CMP |
| Certificate Management Protocol |
| CMPv2 |
| Certificate Management Protocol version 2 |
| CN |
| Common Name |
| CNIP |
| Calling Name Identity Presentation |
| CNS |
| Calling Name Server | Conference Notification Service |
| CON |
| Connect |
| COOB |
| Call Out Of the Blue |
| cp |
| common policy |
| CP |
| Conference Participant | Correction Package |
| CP Manager |
| Common Parts Manager |
| CPIM |
| Common Presence and Instant Messaging (see RFC 3862) |
| CPE |
| Customer-Premises Equipment |
| CPI |
| Customer Product Information |
| CPS |
| Carrier Pre-Select |
| CPSRn |
| Carrier Pre-Select Rn |
| CPU |
| Central Processing Unit |
| CR |
| Change Request |
| CS |
| Charging Server | Carrier Select | Capability Set | Circuit Switched |
| CSC |
| Carrier Select Code |
| CSCF |
| Call Session Control Function |
| CSI |
| CAMEL Subscription Information |
| CSR |
| Customer Service Request |
| CSRN |
| CS domain Routing Number |
| CSRn |
| Carrier Select Rn |
| CUA |
| Capabilities Update Answer |
| CUG |
| Closed User Group |
| CUR |
| Capabilities Update Request |
| CW |
| Communication Waiting |
| CWA |
| Communication Waiting Active |
| CWU |
| Communication Waiting Used |
| DAI |
| Dial Around Indicator |
| DBL |
| Dynamic Black List |
| DBN |
| Database Network |
| DBS |
| Database Service |
| DCN |
| Data Communication Network |
| DER |
| Discrete Event Registration | Distinguished Encoding Rules |
| DES |
| Data Encryption Standard |
| DN |
| Directory Number (of a called party) | Distinguished Name |
| DNDCF |
| Communication Forwarding Do Not Disturb |
| DNDCFVM |
| Communication Forwarding Do Not Disturb to Voice Mail |
| DNDCB |
| Do Not Disturb Communication Barring |
| DNM |
| Dialed Number Mapping |
| DNS |
| Domain Name Server/System |
| DP |
| Detection Point |
| DPA |
| Disconnect Peer Answer |
| DPR |
| Disconnect Peer Request |
| DR |
| Distinctive Ring |
| DRBD |
| Distributed Replicated Block Device |
| DSA |
| Dialed String Analysis |
| DSCP |
| Differentiated Services Code Point |
| DSL |
| Digital Subscriber Line |
| DST |
| Daylight Saving Time |
| DTLS |
| Datagram Transport Layer Security |
| DTM |
| Dial Tone Management |
| DTMF |
| Dual-Tone Multifrequency |
| DWA |
| Device Watchdog Answer |
| DWR |
| Device-Watchdog-Request |
| ECDSA |
| Elliptic Curve Digital Signature Algorithm |
| ECF |
| Event Charging Function |
| ECIM |
| Ericsson Common Information Model |
| ECGI |
| E-UTRAN Cell Global Identifier |
| ECLI |
| Ericsson Command-Line Interface |
| ECM |
| Ericsson Cloud Manager |
| ECMP |
| Equal-Cost Multipath |
| EJB |
| Enterprise JavaBeans |
| ECT |
| Explicit Communication Transfer |
| EMA |
| Ericsson Multi Activation |
| E-MRFC |
| External MRFC |
| E-MSC |
| ICS Enhanced MSC |
| ENUM |
| E.164 Number Mapping |
| EP |
| Emergency Package |
| EPC |
| Evolved Packet Core |
| EPS |
| Evolved Packet System |
| ERB |
| Event Report BCSM |
| ERSIP |
| Evolved Realm Specific Internet Protocol |
| ETSI |
| European Telecommunications Standards Institute |
| eVIP |
| Evolved Virtual Internet Protocol |
| FA |
| Flexible Alerting |
| FAC |
| Feature Access Code | Feature Activation Code |
| FC |
| Function Code |
| FCD |
| Flexible Communication Distribution |
| FCDDP |
| Flexible Communication Distributions Divert Primary |
| FCH |
| Flexible Charging |
| FCI |
| Furnish Charging Information | Forward Call Indicator |
| FE |
| front end |
| FEE |
| front-end element |
| FIFO |
| First In, First Out |
| FM |
| Fault Management |
| FMC |
| Fixed and Mobile Convergence |
| FQDN |
| Fully Qualified Domain Name |
| FS |
| File Server |
| FSFS |
| Flexible Service Format Selection |
| FTP |
| File Transfer Protocol |
| FTU |
| File Transfer Utility |
| FUA |
| Final Unit Action |
| FUI |
| Final Unit Indication |
| GED |
| Generic Ericsson Device |
| GCAC |
| Group Call Admission Control |
| GETS |
| Government Emergency Telecommunications Service |
| GM |
| Gateway Model |
| GMSC |
| Gateway Mobile Switching Center |
| GP |
| Granularity Period |
| GRUU |
| Globally Routable User Agent URI |
| GSM |
| Global System for Mobile Communications |
| gsmSCF |
| GSM Service Control Function |
| gsmSSF |
| GSM Service Switching Function |
| GSN |
| Global Subscriber Number |
| GSU |
| Granted Service Units |
| GUI |
| Graphical User Interface |
| HA |
| High Availability |
| HCM |
| Health Check Management |
| HF |
| Human Factors |
| HI |
| History |
| HLR |
| Home Location Register |
| HO |
| Handover |
| HOT |
| Heat Orchestration Template |
| HSPA |
| High-Speed Packet Access |
| HSS |
| Home Subscriber Server |
| HTML |
| Hypertext Markup Language |
| HTTP |
| Hypertext Transfer Protocol |
| HTTPS |
| Hypertext Transfer Protocol Secure |
| HW |
| Hardware |
| ICMP |
| Internet Control Message Protocol |
| I-CSCF |
| Interrogating–CSCF |
| IAD |
| Integrated Access Device |
| IANA |
| Internet Assigned Numbers Authority |
| IBCF |
| Interconnection Border Control Function |
| ICB |
| Incoming Communication Barring |
| ICBS |
| Interconnection Charge Billing System |
| ICID |
| IMS Charging Identifier |
| ICN |
| Incoming Call Number | Incoming Communication Number |
| ICS |
| IMS Common System | IMS Centralized Services |
| ICSI |
| IMS Communication Service Identifier |
| ID |
| Incoming Dialog |
| IDP |
| International Dialing Prefix | Initial Detection Point |
| IdPres |
| Identity Presentation |
| IEC |
| Immediate Event Charging | Interexchange Carrier |
| IEEE |
| Institute of Electrical and Electronics Engineers |
| IETF |
| Internet Engineering Task Force |
| iFC |
| Initial Filter Criteria |
| IKE |
| Internet Key Exchange |
| IMM |
| Information Model Management |
| IMRN |
| IP Multimedia Routing Number |
| IMS |
| IP Multimedia Subsystem |
| IMSI |
| International Mobile Subscriber Identity |
| IMPU |
| IP Multimedia Public Identity |
| IN |
| Intelligent Network |
| INAP |
| Intelligent Network Application Protocol |
| I/O |
| Input/Output |
| IOI |
| Inter-Operator Identifier |
| IP |
| Internet Protocol |
| IPsec |
| Internet Protocol Security |
| IPv4 |
| IP version 4 |
| IPv6 |
| IP version 6 |
| IPVS |
| Internet Protocol Virtual Server |
| IRI |
| Internationalized Resource Identifier |
| IRP |
| Integration Reference Point |
| IRS |
| Implicit Registration Set |
| ISC |
| IMS Service Control | IP Multimedia Service Control | IMS Centralized Services |
| ISDN |
| Integrated Services Digital Network |
| ISO |
| International Organization for Standardization |
| ISP |
| In-Service Performance |
| ISUP |
| ISDN User Part |
| ITU |
| International Telecommunication Union |
| ITU-T |
| International Telecommunication Union Telecommunication Standardization Sector |
| IVR |
| Interactive Voice Recognition |
| IW |
| Interworking |
| JC |
| Japanese Charging |
| KPI |
| Key Performance Indicator |
| LAI |
| Location Area Identity |
| LAN |
| Local Area Network |
| LBE |
| Load Balancer Element |
| LCT |
| Local Craft Terminal |
| LDAP |
| Lightweight Directory Access Protocol |
| LDIF |
| LDAP Data Interchange Format |
| LDN |
| Local Distinguished Name |
| LM |
| License Management |
| LEAs |
| Law Enforcement Agency |
| LKF |
| License Key File |
| LM |
| License Management |
| LOTC |
| Linux Open Telecom Cluster |
| LSDP |
| The SDP of the local descriptor of a termination |
| LTE |
| Long Term Evolution |
| MAC |
| Media Access Control |
| MAP |
| Mobile Application Part |
| MCC |
| Mobile Country Code |
| MCID |
| Malicious Communication Identification |
| MCR |
| Malicious Communication Rejection |
| MD5 |
| Message-Digest algorithm 5 |
| MDF |
| Model Delivery Function |
| ME |
| Managed Element |
| MG |
| Media Gateway |
| MGC |
| Media Gateway Controller |
| MGCF |
| Media Gateway Control Function |
| MIB |
| Management Information Base |
| MID |
| Message Identifier |
| MIM |
| Management Information Model |
| MIME |
| Multipurpose Internet Mail Extensions |
| MMAS |
| Multimedia Application Server |
| MME |
| Mobility Management Entity |
| MMI |
| Man–Machine Interface |
| MMTel |
| Multimedia Telephony |
| MNC |
| Mobile Network Code |
| MO |
| Managed Object | Mobile Originated Call |
| MOC |
| Managed Object Class |
| MOI |
| Managed Object Instance |
| MOId |
| Managed Object Identifier |
| MOM |
| Managed Object Model |
| MRF |
| Media Resource Function |
| MRFC |
| Media Resource Function Controller |
| MRFP |
| Media Resource Function Processor |
| MS |
| Mobile Station |
| MSC |
| Mobile Switching Center |
| MSISDN |
| Mobile Subscriber Integrated Services Digital Network |
| MSRN |
| MS Routing Number |
| MSRP |
| Message Session Relay Protocol |
| MSS |
| Mobile Soft Switch |
| MT |
| Mobile Terminated call |
| MTP |
| Message Transfer Part |
| MW |
| Middleware |
| MWI NA |
| MWI NA Message Waiting Indicator Not Applicable |
| N |
| Number (a one-digit number) |
| NA |
| Network Announcement |
| NAI |
| Network Access Identifier |
| NBI |
| Northbound Interface |
| N-CSI |
| Network CAMEL Subscription Information |
| NANP |
| North American Numbering Plan |
| NAT |
| Network Address Translation |
| NBI |
| Northbound Interface |
| NCC |
| NorthboundCallControl |
| ND |
| New Destination | New Destination Number |
| NDP |
| National Dialing Prefix |
| NDUB |
| Network Determined User Busy |
| NE |
| Network Element |
| NETCONF |
| Network Configuration |
| NFS |
| Network File System |
| NMS |
| Network Management System |
| NN |
| Number Normalization |
| NM |
| Network Management | Node Management |
| NMS |
| Network Management System |
| NNI |
| Node Network Interface |
| NOC |
| Network Operations Center |
| NP |
| Number Portability |
| NPA |
| Numbering Plan Areas |
| NPIN |
| New PIN |
| NPLI |
| Network Provided Location Information |
| nPMF |
| new Performance Management Framework |
| NSN |
| National Service Number | National Significant Number |
| NTP |
| Network Time Protocol |
| NTT |
| Nippon Telegraph and Telephone Corporation |
| O&M |
| Operation and Maintenance |
| O-CSI |
| Originating CAMEL Subscription Information |
| O-IOI |
| Originating Inter-Operator Identifier |
| O-SDS |
| Originating SDS |
| OAM |
| Operation, Administration, and Maintenance | Operation and Maintenance |
| OAUC |
| Originating Additional User Category |
| OCB |
| Outgoing Communication Barring | Originating Communication Barring |
| OCF |
| Online Charging Function |
| OCNIP |
| CNIP on originating MMTel AS |
| OCOBP |
| Operator Controlled Outgoing Barring Program |
| ocp |
| OMA common policy |
| OCS |
| Online Charging System |
| OCT |
| Operator Controlled Transfer |
| OD |
| Outgoing Dialog |
| OID |
| Object Identifier |
| OIP |
| Originating Identity Presentation |
| OIR |
| Originating Identity Restriction |
| OLP |
| Overload Protection |
| OMA |
| Open Mobile Alliance |
| OPI |
| Operating Instruction |
| OPIN |
| Old PIN |
| oPMF |
| old Performance Management Framework |
| OrigTerm |
| Originating and Terminating |
| OS |
| Operating System |
| OSI |
| Open Systems Interconnection |
| OSN |
| Operator Service Number |
| OSPF |
| Open Shortest Path First |
| OSS |
| Operations Support System |
| OTP |
| Operating Telephony Provider |
| OVA |
| Open Virtualized Architecture |
| OVP |
| Open Virtualization Format |
| P-CSCF |
| Proxy–CSCF |
| P-P-N-I |
| P-Private-Network-Indication |
| PA |
| Presence Agent |
| PAI |
| P-Asserted-Identity |
| PAM |
| Pluggable Authentication Module |
| PANI |
| P-Access-Network-Information |
| PBX |
| Private Branch Exchange |
| PC |
| Personal Computer | Probable Cause |
| PCFA |
| P-Charging-Function-Addresses |
| PCV |
| P-Charging-Vector |
| Probability Density Function |
| PDU |
| Protocol Data Unit |
| PEM |
| Privacy Enhanced Mail |
| PGM |
| Presence and Group Management |
| PIDF |
| Presence Information Data Format (RFC 3863) |
| PIN |
| Personal Identification Number |
| PKCS |
| Public-Key Cryptography Standards |
| PKI |
| Public-Key Infrastructure |
| PL |
| Payload |
| PM |
| Performance Management | Performance Measurement |
| PMD |
| Processor Module with Disk |
| PMF |
| Performance Management Framework |
| PMTU |
| Path Maximum Transmission Unit |
| POI |
| Point of Interface |
| POSIX |
| Portable Operating System Interface |
| POT |
| Persistent Object Type |
| PRACK |
| Provisional Response Acknowledgment |
| PS |
| Packet Switched | Presence Server | Previous Store | Protocol Specification |
| PSI |
| Public Service Identifier | Public Service Identity |
| PSK |
| Preshared Key |
| PSTN |
| Public Switched Telephone Network |
| PUI |
| Public User Identity |
| PUID |
| Passport Unique ID |
| PXE |
| Preboot Execution Environment |
| QoS |
| Quality of Service |
| RA |
| Registration Authority |
| RAM |
| Random-Access Memory |
| RAN |
| Radio Access Network |
| RAT |
| Radio Access Technology |
| RBAC |
| Role-Based Access Control |
| RBT |
| Ring Back Tone |
| RBS |
| Radio Base Station |
| RCA |
| Root Cause Analysis |
| RDN |
| Relative Distinguished Name |
| RFC |
| Request for Comment |
| Rn |
| Routing number |
| ROP |
| Report Output Period |
| RPC |
| Remote Procedure Call |
| RPH |
| Resource-Priority Header |
| RPID |
| Rich Presence Extensions to the Presence Information Data Format (RFC 4480) |
| RPM |
| RedHat Package Manager |
| RRT |
| Realm Routing Table |
| RSA |
| Public-key cryptography based on Rivest, Shamir, and Adleman |
| RSDP |
| The SDP of the remote descriptor of a termination |
| RSG |
| Remote Support Gateway |
| RSIP |
| Realm Specific Internet Protocol |
| RT |
| Ringing Time |
| RTP |
| Real-Time Transfer Protocol (RFC 3550) |
| RTT |
| Round-Trip Time |
| RTTI |
| Real-time Transfer of Tariff Information |
| R/W |
| Read-write |
| S-CSCF |
| Serving Call Session Control Function |
| SA |
| Support Agent |
| SAAL |
| Signalling ATM Adaptation Layer |
| SAF |
| Service Availability Forum |
| SBG |
| Session Border Gateway |
| SC |
| Service Code | Service Continuity |
| SCC |
| Sentinel® Cloud Connect |
| SCEP |
| Simple Certificate Enrollment Protocol |
| SCF |
| Service Control Function |
| SCP |
| Secure Copy | Service Control Point |
| SCPC |
| Service Control Point Carrier |
| SCTP |
| Stream Control Transmission Protocol |
| SCUR |
| Session based Charging with Unit Reservations |
| SD |
| Subscriber Data |
| SDP |
| Session Description Protocol | Software Delivery Package |
| SDS |
| Service Domain Selection |
| SE |
| Security Element |
| SecM |
| Security Management |
| SELinux |
| Security-Enhanced Linux |
| SF |
| System Functions |
| SFTP |
| Secure File Transfer Protocol |
| SFW |
| Service Frame Work |
| SHA |
| Secure Hash Algorithm |
| SI |
| Supplementary Information |
| SIP |
| Session Initiation Protocol |
| SLF |
| Subscriber Location Function |
| SM |
| Security Management |
| SN |
| Subscriber Number |
| SND |
| Short Number Dialing |
| SNM |
| Sub-Network Manager |
| SNMP |
| Simple Network Management Protocol |
| SoC |
| Statement of Compliance |
| SOAP |
| Simple Object Access Protocol |
| SPM |
| Service Process Manager |
| SR |
| Separator |
| SRF |
| Specialized Resource Function |
| SRV |
| Service (Record) |
| SRVCC |
| Single Radio Voice Call Continuity |
| SS |
| Supplementary Service |
| SS7 |
| Signalling System No.7 |
| SSC |
| Supplementary Service Code |
| SSCF |
| Service Specific Coordination Functions |
| SSCOP |
| Service Specific Connection Oriented Protocol |
| SSF |
| Service Switching Function |
| SSH |
| Secure Shell |
| SSL |
| Secure Socket Layer |
| SSP |
| Service Switching Point |
| ST |
| Sip Trunking |
| ST AS |
| Sip Trunking Application Server |
| STI |
| Session Transfer Identifier |
| STN |
| Session Transfer Number |
| STN-SR |
| Session Transfer Number for SRVCC |
| STOD |
| Session Transfer to Own Device |
| sub-MO |
| sub-Managed Object |
| SU |
| Service Unit |
| SW |
| Software |
| SwIM |
| Software Inventory Management |
| SwM |
| Software Management |
| SX |
| Service Suffix |
| SysM |
| System Management |
| T-ADS |
| Terminating Access Domain Selection |
| T-CSI |
| Terminating CAMEL Subscription Information |
| T-IOI |
| Terminating Inter-Operator Identifier |
| T-SDS |
| Terminating SDS |
| TAC |
| Tracking Area Code |
| TAUC |
| Terminating Additional User Category |
| TBAC |
| Target-Based Access Control |
| TC |
| Textual Convention |
| TCA |
| Terminating Charge Area |
| TCAP |
| Terminating CAMEL Application Part |
| TCP |
| Transmission Control Protocol |
| TD |
| Transparent Data |
| TCP |
| Transmission Control Protocol |
| TDM |
| Time Division Multiplexing |
| TDMA |
| Time Division Multiple Access |
| TIP |
| Terminating Identification Presentation |
| TIR |
| Terminating Identification Restriction |
| TISPAN |
| Telecoms & Internet converged Services & Protocols for Advanced Networks |
| TLD |
| Top-Level Domain |
| TLDcc |
| Top-Level Domain Country Code |
| TLEC |
| Terminating Local Exchange Carrier |
| TLS |
| Transport Layer Security |
| TQT |
| Time Quota Threshold |
| TP |
| Traffic Processor |
| TPS |
| Transactions Per Seconds |
| TR |
| Trouble Report |
| TS |
| Technical Specification |
| TTC |
| Telecommunication Technology Committee |
| TTCN |
| Testing and Test Control Notation |
| UA |
| User Agent |
| UA-A |
| User Agent (Calling) |
| UA-B |
| User Agent (Called) |
| UAC |
| User Agent Client |
| UAS |
| User Agent Server |
| UC |
| Use Case |
| UCAC |
| User Call Admission Control |
| UCF |
| Upgrade Control File |
| UDUB |
| User Determined User Busy |
| UDP |
| User Datagram Protocol |
| UE |
| User Endpoint | User Entity | User Equipment |
| ULN |
| Unique Logical Name |
| UML |
| Unified Modeling Language |
| UMTS |
| Universal Mobile Communication System |
| UP |
| Upgrade Package | Upper Part |
| URI |
| Uniform Resource Identifier |
| URL |
| Uniform Resource Locator |
| URN |
| Uniform Resource Name |
| USU |
| Used Service Units |
| UTC |
| Coordinated Universal Time |
| UTF |
| Unicode Transformation Format |
| UUID |
| Universally Unique Identifier |
| UUIR |
| User Unrelated ISC Routing |
| UTC |
| Universal Time coordinate |
| VCC |
| Voice Call Continuity |
| VCPU |
| Virtual CPU |
| vDicos |
| Virtual Dicos |
| VIP |
| Virtual IP Address |
| VLAN |
| Virtual Local Area Network |
| VM |
| Virtual Machine | Voice Mail |
| VNF |
| Virtual Network Function |
| VoIP |
| Voice over IP |
| VoLTE |
| Voice over LTE |
| VoPS |
| Voice over PS |
| VPN |
| Virtual Private Network |
| VRRP |
| Virtual Router Redundancy Protocol |
| VT |
| Validity Time |
| VTP |
| Virtual Telephony Provider |
| wIMPU |
| Wildcarded Public User Identity |
| WSDL |
| Web Services Description Language |
| XCAP |
| XML Configuration Access Protocol |
| XCAP Client |
| An HTTP client that understands how to follow the naming and validation constraints defined in the XCAP draft. |
| XDMS |
| XML Document Management Server |
| XDP |
| XDMS Data Protocol |
| XUI |
| XCAP User Identifier |
| XML |
| Extensible Markup Language |
| XSD |
| XML Schema Definition |
| XUI |
| XCAP User Identity |
| YPS |
| Yellow Pages Server |