| 3GPP |
Third Generation Partnership Project |
| 3GPP2 |
Third Generation Partnership Project 2 |
| A-RACF |
Access Resource Admission and Control Function |
| AAA |
Authentication, Authorization, Accounting |
| AAL |
ATM Adaptation Layer |
| ABNF |
Augmented Bachus-Naur Form |
| ACK |
Acknowledge |
| AF |
Assured Forwarding |
| AF |
Application Function |
| AGCF |
Access Gateway Control Function |
| AGF |
Access Gateway Function |
| AH |
Authentication Header |
| AK |
Anonymity Key |
| AKA |
Authentication and Key Agreement |
| ALG |
Application Layer Gateway |
| AMF |
Authentication Management Field |
| AMF |
Access Management Function |
| AMR |
Adaptive Multi Rate |
| AMR-WB |
Adaptive Multi Rate – Wide Band |
| AP |
Access Point |
| AP |
Authentication Proxy |
| AP |
Aggregation Proxy |
| API |
Application Programming Interface |
| APN |
Access Point Name |
| ARF |
Access Relay Function |
| AS |
Access Stratum |
| AS |
Autonomous System |
| AS |
Application Server |
| ASN.1 |
Abstract Syntax Notation One |
| ATIS |
Alliance for Telecommunications Industry Solutions |
| ATM |
Asynchronous Transfer Mode |
| AuC |
Authentication Centre |
| AUID |
Application Unique ID |
| AUTN |
Authentication Token |
| AVP |
Attribute Value Pair |
| AVP |
Audio Video Profile |
| B2BUA |
Back-To-Back User Agent |
| BA |
Behaviour Aggregate |
| BB |
Bandwidth Broker |
| BE |
Best Effort |
| BG |
Border Gateway |
| BGC |
Border Gateway Controller |
| BGCF |
Breakout Gateway Control Function |
| BGF |
Border Gateway Function |
| BGP |
Border Gateway Protocol |
| BICC |
Bearer Independent Call Control Protocol |
| BM-SC |
Broadcast/Multicast Service Centre |
| BRAS |
Broadband Remote Access Server |
| BS |
Base Station |
| BS |
Billing System |
| BSC |
Base Station Controller |
| BSF |
Bootstrapping Server Function |
| BSS |
Base Station System |
| BTF |
Basic Transport Function |
| BTS |
Base Transceiver System |
| C-BGF |
Core Border Gateway Function |
| CBQ |
Class Based Queuing |
| CBR |
Constant Bitrate |
| CC |
Country Code |
| CCF |
Charging Control Function |
| CDF |
Charging Data Function |
| CDR |
Charging Data Record |
| CDR |
Call Detail Record |
| CGF |
Charging Gateway Function |
| CIC |
Circuit Identity Code (ISUP) |
| CIC |
Call Instance Code (BICC) |
| CIDR |
Classless Inter Domain Routing |
| CK |
Cipher Key |
| CLF |
Connectivity Session Location and Repository Function |
| CMS |
Cryptographic Message Syntax |
| CMTS |
Cable Modem Termination System |
| CN |
Core Network |
| CNG |
Customer Network Gateway |
| CNGCF |
CNG Configuration Function |
| CoA |
Care-of-Address |
| CoS |
Class of Service |
| CPE |
Customer Premises Equipment |
| CPL |
Call Processing Language |
| CR-LDP |
Constraint based Routing LDP |
| CRC |
Cyclic Redundancy Check |
| CRF |
Charging Rules Function |
| CRTP |
Compressed RTP |
| CS |
Circuit Switched |
| CSCF |
Call/Session Control Function |
| CSMA |
Carrier Sense Multiple Access |
| CT |
Client Transaction |
| CTF |
Charging Trigger Function |
| CWMP |
CPE WAN Management Protocol |
| DA |
Destination Address |
| DF |
Don’t Fragment |
| DES |
Data Encryption Standard |
| DHCP |
Dynamic Host Configuration Protocol |
| Diffserv |
Differential Services |
| DL |
Downlink |
| DMZ |
Demilitarized Zone |
| DNS |
Domain Name System |
| DOCSIS |
Data Over Cable Service Interface Specification |
| DSAI |
Dynamic Service Activation Information |
| DSCP |
Diffserv Code Point |
| DSLAM |
Digital Subscriber Line Access Multiplexer |
| DSP |
Digital Signalling Processor |
| DTMF |
Dual-Tone Multi-Frequency |
| E.164 |
The format for international telephone numbers |
| EAP |
Extensible Authentication Protocol |
| EBCF |
Event Based Charging Function |
| ECF |
Event Charging Function (R5) |
| EDGE |
Enhanced Data Rates for GSM Evolution |
| EF |
Expedited Forwarding |
| EIGRP |
Enhanced Interior Gateway Routing Protocol |
| EIR |
Equipment Identity Register |
| EIS |
Early IMS Security |
| ENUM |
E.164 Number Mapping |
| ESP |
Encapsulating Security Payload |
| ETH |
Ethernet |
| ETSI |
European Telecommunications Standards Institute |
| FA |
Foreign Agent |
| FCS |
Frame Check Sequence |
| FDDI |
Fiber Distributed Data Interface |
| FEC |
Forwarding Equivalence Class |
| ffs |
For Further Study |
| FIN |
Finish |
| FTP |
File Transfer Protocol |
| FQDN |
Fully Qualified Domain Name |
| FW |
Firewall |
| GAA |
Generic Authentication Architecture |
| GBA |
Generic Bootstrapping Architecture |
| GCF |
Gateway Control Function |
| GERAN |
GSM EDGE Radio Access Network |
| GGSN |
Gateway GPRS Support Node |
| GMPLS |
Generalized MPLS |
| GMSC |
Gateway MSC |
| GPRS |
General Packet Radio Service |
| GRUU |
Globally Routable User Agent URI |
| GRX |
GPRS Roaming Exchange |
| GSM |
Global System for Mobile Communication |
| GW |
Gateway |
| HA |
Home Agent |
| HLR |
Home Location Register |
| HMAC |
Hashed Key Message Authentication Check |
| HNW |
Home Network |
| HSS |
Home Subscriber Server |
| HTTP |
Hypertext Transfer Protocol |
| I-BGF |
Interworking Border Gateway Function |
| I-CSCF |
Interrogating CSCF |
| IAD |
Intelligent Access Device |
| IANA |
Internet Assigned Numbers Authority |
| IAPP |
Internet Access Point Protocol |
| IBCF |
Interconnection Border Control Function |
| ICE |
Interactive Connectivity Establishment |
| ICMP |
Internet Control Message Protocol |
| ICID |
IMS Charging Identity |
| ICQ |
I Seek You |
| IETF |
Internet Engineering Task Force |
| IFC |
Initial Filter Criteria |
| IHL |
Internet Header Length |
| IK |
Integrity Key |
| IKE |
Internet Key Exchange |
| IM |
Instant Message |
| IMAP |
Internet Mail Access Protocol |
| IMPI |
IMS Private Identity |
| IMPU |
IMS Public Identity |
| IMS |
IP Multimedia Subsystem |
| IMSI |
International Mobile Subscriber Identity |
| IMT |
International Mobile Telecommunications |
| Intserv |
Integrated Services |
| IOI |
Inter Operator Identifier |
| IP |
Internet Protocol |
| IP-CAN |
IP Connectivity Access Network |
| IP-PBX |
IP-Private Branch Exchange |
| IPsec |
IP Security |
| IPTV |
Internet Protocol Television |
| IPX |
IP Exchange |
| IS |
Intermediate system |
| ISC |
IMS Service Control Interface |
| ISDN |
Integrated Services Digital Network |
| ISIM |
IP Multimedia Subscriber Identity Module |
| ISP |
Internet Service Provider |
| ISUP |
ISDN User Part |
| IRS |
Implicit Registration Set |
| ITSP |
Internet Telephony Service Provider |
| ITU |
International Telecommunication Union |
| IVR |
Interactive Voice Response |
| IWF |
Interworking Function |
| K |
Secret Key |
| Kc |
Ciphering Key (<R99) |
| Ki |
Authentication Key (<R99) |
| LAN |
Local Area Network |
| LDAP |
Lightweight Directory Access Protocol |
| LDP |
Label Distribution Protocol |
| LER |
Label Edge Router |
| LLC |
Logical Link Control |
| LSP |
Label Switched Path |
| LSR |
Label Switching Router |
| MOS |
Mean Opinion Score |
| MAC |
Medium Access Control |
| MCC |
Mobile Country Code |
| MEGACO |
Gateway Control Protocol (H.248) |
| MF |
More Fragment |
| MGCF |
Media Gateway Control Function |
| MG |
Media Gateway |
| MGC |
Media Gateway Controller |
| MGCP |
Media Gateway Control Protocol (Cisco) |
| MGF |
Media Gateway Function |
| MGW |
Media Gateway |
| MIB |
Management Information Base |
| MIME |
Multipurpose Internet Mail Extensions |
| MNC |
Mobile Network Code |
| MPLS |
Multiprotocol Label Switching |
| MPLS-TE |
MPLS for Traffic Engineering |
| MRF |
Media Resource Function |
| MRFC |
Media Resource Function Controller |
| MRFP |
Media Resource Function Processor |
| MS |
Mobile Station |
| MSC |
Mobile Switching Centre |
| MSCF |
Messaging Service Control Function |
| MSRP |
Message Session Relay Protocol |
| MSIN |
Mobile Subscriber Identity Number |
| MT |
Mobile Termination |
| MTP |
Message Transfer Part |
| MTU |
Maximum Transfer Unit |
| NACF |
Network Access Configuration Function |
| NAF |
Network Application Function |
| NAPTR |
Naming Authority Pointer Record |
| NAS |
Network Access Server |
| NASS |
Network Attachment Subsystem |
| NAT |
Network Address Translation |
| NAT-PT |
NAT with Protocol Translation |
| NBA |
NASS Bundled Authentication |
| NE |
Network Element |
| NIC |
Network Interface Card |
| OMA |
Open Mobile Alliance |
| OSI |
Open Systems Interconnection |
| OSPF |
Open Shortest Path First |
| P-CSCF |
Proxy CSCF |
| PAN |
Personal Area Network |
| PBX |
Private Branch Exchange |
| PCC |
Policy and Charging Control |
| PCEF |
Policy and Charging Enforcement Function |
| PCM |
Pulse Code Modulation |
| PCRF |
Policy and Changing Resource Function |
| PCU |
Packet Control Unit |
| PDA |
Personal Digital Assistant |
| PDBF |
Policy Database Function |
| PDC |
Personal Digital Cellular |
| PDF |
Policy Decision Function |
| PDG |
Packet Data Gateway |
| PDN |
Packet Data Network |
| PDP |
Packet Data Protocol |
| PDP |
Policy Decision Point |
| PEP |
Policy Enforcement Point |
| PES |
PSTN/ISDN Emulation Subsystem |
| PESQ |
Perceptual Evaluation of Speech Quality |
| PGP |
Pretty Good Privacy |
| PHB |
Per Hop Behaviour |
| PHY |
Physical Layer |
| PIB |
Policy Information Base |
| PLMN |
Public Land Mobile Network |
| PNA |
Presence Network Agent |
| PoC |
Push-to-talk over Cellular |
| POP |
Post Office Protocol |
| POTS |
Plain Old Telephone System |
| PPP |
Point-to-Point Protocol |
| PPP |
Presentity Presence Proxy |
| PQ |
Priority Queuing |
| PRI |
Primary Rate Interface |
| PS |
Packet Switched |
| PS |
Power Safe Mode |
| PSH |
Push |
| PSI |
Public Service Identity |
| PSK |
Phase Shift Keying |
| PSTN |
Public Switched Telephone Network |
| PTT |
Push-To-Talk |
| QoS |
Quality of Service |
| RACF |
Resource Admission and Control Function |
| RACS |
Resource and Admission Control Subsystem |
| RADIUS |
Remote Authentication Dial In User Service |
| RAN |
Radio Access Network |
| RAND |
Random Challenge |
| RAS |
Remote Access Server |
| RCEF |
Resource Control Enforcement Function |
| RED |
Random Early Detection |
| RES |
Response |
| RF |
Radio Frequency |
| RFC |
Request For Comments |
| RGF |
Residential Gateway Function |
| RGW |
Residential Gateway |
| RIP |
Routing Information Protocol |
| RLS |
Resource List Server |
| RNC |
Radio Network Controller |
| ROHC |
Robust Header Compression |
| RST |
Reset |
| RSVP |
Resource Reservation Protocol |
| RTCP |
RTP Control Protocol |
| RTP |
Real Time Transport Protocol |
| RTSP |
Real Time Streaming Protocol |
| S-CSCF |
Serving CSCF |
| S/MIME |
Secure Mime |
| SA |
Security Association |
| SA |
Source Address |
| SAD |
Security Association Database |
| SAP |
Service Access Point |
| SAP |
Session Announcement Protocol |
| SBG |
Session Border Gateway |
| SCS |
Service Capability Server |
| SCTP |
Stream Control Transmission Protocol |
| SDP |
Session Description Protocol |
| SEG |
Security Gateway |
| SGF |
Signalling Gateway Function |
| SGSN |
Serving GPRS Support Node |
| SGW |
Signalling Gateway |
| SIGTRAN |
Signalling Transport |
| SIM |
Subscriber Identity Module |
| SIP |
Session Initiation Protocol |
| SIP-I |
SIP and ISUP/BICC Interworking |
| SIP-T |
SIP for Telephones |
| SLA |
Service Level Agreement |
| SLF |
Subscription Locator Function |
| SMTP |
Simple Mail Transport Protocol |
| SMS |
Short Message Service |
| SNMP |
Simple Network Management Protocol |
| SPA |
Service Provider API |
| SPC |
Signalling Point Code |
| SPD |
Security Policy database |
| SPDF |
Service Policy Decision Function |
| SRES |
Signed Response |
| SRV |
Service Record |
| SS |
Supplementary Service |
| SS7 |
Signalling System number 7 |
| SSH |
Secure Shell |
| SSID |
Service Set Identifier |
| SSL |
Secure Socket Layer |
| SSRC |
Synchronizing Source |
| ST |
Server Transaction |
| STUN |
Simple Traversal of UDP through NAT |
| SYN |
Synchronize |
| TA |
Transmitter Address |
| TAS |
Telephony Application Server |
| TBCP |
Talk Burst Control Protocol |
| tbd |
To Be Decided |
| TCAP |
Transaction Capabilities Application Part |
| TCP |
Transmission Control Protocol |
| TDM |
Time Division Multiplex |
| TE |
Terminal Equipment |
| TFTP |
Trivial File Transfer Protocol |
| TGCF |
Trunking Gateway Control Function |
| THIG |
Topology Hiding Gateway |
| TIM |
Traffic Indication Map |
| TISPAN |
Telecoms & Internet Converged Services & Protocols for Advanced Networks |
| TLS |
Transport Layer Security |
| ToS |
Type of Service |
| TPF |
Traffic Plane Function |
| TrGW |
Translation Gateway |
| TTL |
Time To Live |
| TURN |
Traversal Using Relay NAT |
| UA |
User Agent |
| UAAF |
User Authentication and Authorization Function |
| UAC |
User Agent Client |
| UAS |
User Agent Server |
| UBR |
Unspecified Bit Rate |
| UDP |
User Datagram Protocol |
| UE |
User Equipment |
| UMTS |
Universal Mobile Telecommunications System |
| UICC |
Universal Integrated Circuit Card |
| UL |
Uplink |
| UPnP |
Universal Plug and Play |
| UPSF |
User Profile Server Function |
| USIM |
Universal Subscriber Identity Module |
| URG |
Urgent |
| URI |
Uniform Resource Identifier |
| UTRAN |
UMTS Terrestrial Radio Access Network |
| VBR |
Variable Bit Rate |
| VC |
Virtual Circuit |
| VCC |
Voice Call Continuity |
| VCC |
Virtual Channel Connection |
| VCI |
Virtual Channel Identifier |
| VGCF |
Voice Gateway Control Function |
| VGW |
Voice Gateway |
| VLAN |
Virtual LAN |
| VLR |
Visitor Location Register |
| VoA |
Voice over ATM |
| VoF |
Voice over Frame Relay |
| VoIP |
Voice over IP |
| VoN |
Voice over Networks |
| VPI |
Virtual Path Identifier |
| VPN |
Virtual Private Network |
| WAG |
Wireless Application Gateway |
| WAN |
Wide Area Network |
| WFQ |
Weight Fair Queuing |
| WiFi |
WiFi (No abbreviation!) |
| WLAN |
Wireless LAN |
| WM |
Wireless Medium |
| WPAN |
Wireless PAN |
| WRED |
Weighted Random Early Detection |
| XCAP |
XML Configuration Access Protocol |
| XDMS |
XML Data Management Server |
| XML |
Extensible Markup Language |
| XRES |
Expected Response |
