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Acronyms
Acronyms
| 2G | Second-generation mobile system |
| 3DES | Triple Data Encryption Standard |
| 3G | Third-generation mobile system |
| 3GPP | 3rd Generation Partnership Project |
| 3PCC | Third-Party Call Control |
| AAA | Authentication, Authorization, and Accounting |
| AAAA RR | IPv6 Address Resource Record |
| ABNF | Augmented Backus-Naur Form |
| ADSL | Asymmetric Digital Subscriber Line |
| AES | Advanced Encryption Standard |
| AH | Authentication Header |
| AIB | Authenticated Identity Body |
| AKA | Authentication and Key Agreement |
| AMR | Adaptative Multirate |
| AN | Access Network |
| AOR | Address of Record |
| API | Application Programming Interface |
| ARPA | Advanced Research Projects Agency |
| ARR | Address Resource Record |
| AS | Application Server |
| A-SBC | Access Session Border Controller |
| ASCII | American Standard Code for Information Interchange |
| ASR | Automatic Speech Recognition |
| ATM | Asynchronous Transfer Mode |
| AUTN | Authentication Token |
| AVP | Audio/Video Profile |
| B2BUA | Back-to-Back User Agent |
| BBN | (formerly Bolt Beranek and Newman) |
| BCP | Best Current Practice |
| BFCP | Binary Floor Control Protocol |
| BGCF | Breakout Gateway Control Function |
| BICC | Bearer Independent Call Control |
| B-ISDN | Broadband Integrated Services Digital Network |
| CA | Certificate Authority |
| CB | Communication Barring |
| CDIV | Communication Diversion |
| CDMA | Code Division Multiple Access |
| CK | Ciphering Key |
| CLIP | Calling Line Identification Presentation |
| CLIR | Calling Line Identification Restriction |
| CN | Core Network |
| CODEC | COder/DECoder |
| COPS | Common Open Policy Service |
| CPIM | Common Profile for Instant Messaging |
| CPP | Common Profile for Presence |
| CRLF | Carriage Return and Line Feed |
| CS | Circuit Switched |
| DES | Data Encryption Standard |
| DH | Diffie-Hellman |
| DHCP | Dynamic Host Configuration Protocol |
| DNS | Domain Name Service |
| DoS | Denial of Service |
| DSCP | DiffServ Code Point |
| DTM | Dual-Transfer Mode |
| DTMF | Dual-Tone Multifrequency |
| ECC | Elliptic Curve Cryptography |
| ECT | Explicit Communication Transfer |
| EKT | Encrypted Key Transport |
| ESP | Encapsulating Security Payload |
| ETSI | European Telecommunications Standards Institute |
| FMC | Fixed Mobile Convergence |
| FoIP | Fax over Internet Protocol |
| FQDN | Fully Qualified Domain Name |
| FTP | File Transfer Protocol |
| GCP | Gateway Control Protocol |
| GPRS | General Packet Radio Service |
| GRUU | Globally Routable User Agent URI |
| GSM | Global System for Mobile communications |
| GTP | Generic Tunneling Protocol |
| GTT | Global Text Telephony |
| GUI | Graphical User Interface |
| HMAC | Hash Message Authentication Code |
| HSS | Home Subscriber Server |
| HTML | Hypertext Markup Language |
| HTTP | Hypertext Transfer Protocol |
| I-BCF | Interconnect Border Control Function |
| ICE | Interactive Connectivity Establishment |
| ICID | IMS Correlation ID |
| ICS | IMS Centralized Services |
| I-CSCF | Interrogating Call Session Control Function |
| IDEA | International Data Encryption Algorithm |
| IETF | Internet Engineering Task Force |
| IFC | Initial Filtering Criteria |
| IK | Integrity Key |
| IKE | Internet Key Exchange |
| IMAP4 | Internet Message Access Protocol version 4 |
| IM-MGW | IP Multimedia Media Gateway |
| IMP | Interface Message Processor |
| IMPS | Instant Messaging and Presence Service |
| IMS | Internet Multimedia Subsystem |
| IOI | Inter Operator Identifier |
| IP | Internet Protocol |
| IP-CAN | Internet Protocol Connectivity Access Network |
| IPSEC | Internet Protocol Security |
| IPTV | Internet Protocol Television |
| I-SBC | Interconnect Session Border Controller |
| ISC | IMS Service Control |
| ISDN | Integrated Services Digital Network |
| ISIM | IMS Subscriber Identity Module |
| ISOC | Internet Society |
| ISUP | ISDN User Part |
| ITU | International Telecommunication Union |
| IVR | Interactive Voice Response |
| J2ME | Java 2 Micro Edition |
| J2SE | Java 2 Standard Edition |
| JAIN | Java APIs for Integrated Networks |
| JMF | Java Media Framework |
| JPEG | Joint Photographic Experts Group |
| JVM | Java Virtual Machine |
| KPML | Key Press Markup Language |
| LAN | Local Area Network |
| MAC | Message Authentication Code |
| MD | Message Digest |
| MEGACO | Media Gateway Control |
| MG | Media Gateway |
| MGC | Media Gateway Control |
| MGCF | Media Gateway Control Function |
| MIKEY | Multimedia Internet Keying |
| MIME | Multipurpose Internet Mail Extensions |
| MMAPI | Mobile Media API |
| MMS | Multimedia Messaging Service |
| MMTEL | Multimedia Telephony |
| MP3 | MPEG-1 Layer 3 |
| MPEG | Moving Picture Experts Group |
| MRCP | Media Resource Control Protocol |
| MRF | Media Resource Function |
| MRFC | Media Resource Function Controller |
| MRFP | Media Resource Function Processor |
| MSCML | Media Server Control Markup Language |
| MSML | Media Server Markup Language |
| MSRP | Message Session Relay Protocol |
| MTP | Message Transfer Part |
| MWI | Message Waiting Indication |
| NAPT | Network Address Port Translation |
| NAPTR RR | Naming Authority Pointer Resource Record |
| NAT | Network Address Translator |
| NDS | Network Domain Security |
| NGN | Next Generation Network |
| NIST | National Institute of Standards and Technology |
| N-SBC | Network Session Border Controller |
| OCF | Online Charging Function |
| OIP | Originating Identification Presentation |
| OIR | Originating Identification Restriction |
| OMA | Open Mobile Alliance |
| OPEX | Operational Expenditure |
| OSA | Open Service Architecture |
| PA | Presence Agent |
| PBX | Private Branch Exchange |
| PCEF | Policy and Charging Enforcement Function |
| PCM | Pulse-Code Modulation |
| PCRF | Policy and Charging Rules Function |
| P-CSCF | Proxy Call Session Control Function |
| PDP | Policy Decision Point |
| PEP | Policy Enforcement Point |
| PHB | Per-Hop Behavior |
| PIDF | Presence Information Data Format |
| PLMN | Public Land Mobile Network |
| PoC | Push-to-Talk over Cellular |
| POP3 | Post Office Protocol version 3 |
| POTS | Plain Old Telephone System |
| PSTN | Public Switched Telephone Network |
| PUA | Presence User Agent |
| QoS | Quality of Service |
| RC | Rivest’s Cipher |
| RFC | Request for Comments |
| RLMI | Resource List Meta-Information |
| RLS | Resource List Server |
| RPID | Rich Presence Information Data format |
| RR | Resource Record |
| RSA | Rivest Shamir Adelman |
| RSVP | Resource Reservation Protocol |
| RTCP | Real-time Transport Control Protocol |
| RTP | Real-time Transport Protocol |
| RTSP | Real-time Streaming Protocol |
| SA | Security Association |
| SAP | Session Announcement Protocol |
| SBC | Session Border Controller |
| SCCP | Skinny Client Control Protocol |
| SCIP | Simple Conference Invitation Protocol |
| S-CSCF | Serving Call Session Control Function |
| SCTP | Stream Control Transmission Protocol |
| SDES | Source Description |
| SDP | Session Description Protocol |
| SEG | Security Gateway |
| SGW | Signaling Gateway |
| SIP | Session Initiation Protocol |
| S/MIME | Secure/Multipurpose Internet Mail Extensions |
| SMS | Short Message Service |
| SMTP | Simple Mail Transfer Protocol |
| SR | Sender Report |
| SRTP | Secure Real-time Transport Protocol |
| SRV RR | Service Resource Record |
| STUN | Simple Traversal Utilities for NAT |
| TCP | Transmission Control Protocol |
| TD-CDMA | Time Division–Code Division Multiple Access |
| TDM | Time Division Multiplex |
| TIP | Terminating Identification Presentation |
| TIR | Terminating Identification Restriction |
| TISPAN | Telecoms and Internet converged Services and Protocols for Advanced Networks |
| TLS | Transport Layer Security |
| ToIP | Text over Internet Protocol |
| TrGW | Transition Gateway |
| TRIP | Telephony Routing over Internet Protocol |
| TTS | Text-to-Speech |
| UA | User Agent |
| UAC | User Agent Client |
| UAS | User Agent Server |
| UDP | User Datagram Protocol |
| UE | User Equipment |
| UICC | Universal Integrated Circuit Card |
| UMTS | Universal Mobile Telecommunications System |
| URI | Universal Resource Identifier |
| URL | Universal Resource Locator |
| VCC | Voice Call Continuity |
| VFW | Video for Windows |
| VMS | Voice Mail System |
| VOD | Video-on-Demand |
| VoIP | Voice over Internet Protocol |
| VXML | Voice Extensible Markup Language |
| W-CDMA | Wideband Code Division Multiple Access |
| WDM | Windows Driver Model |
| WLAN | Wireless Local Area Network |
| WWW | World Wide Web |
| XCAP | XML Configuration Access Protocol |
| XHTML | Extensible Hypertext Markup Language |
| XML | Extensible Markup Language |
| XMPP | Extensible Messaging and Presence Protocol |
