Abbreviation Index

A

ABE: Always Best Experience
AF: Application Function
AG: Access Gateway
AGCF: Access Gateway Control Function
AGW: Access Gateway
A-IMS: Advances to IP Multimedia Subsystem
AKA: Authentication and Key Agreement
AM: Application Management
API: Application Programming Interface
A-RACF: Access-Resource and Admission Control Function
ARPU: Average Revenue Per User
AS: Application Server
ASP: Application Service Provider
AT: Access Terminal
ATM: Asynchronous Transfer Mode
AV: Audio and Video

B
B2B: Business to Business
B2C: Business to Customer
BFD: Bidirectional Forwarding Detection
BGCF: Breakout Gateway Control Function
BGF: Border Gateway Function
BGW: Broadband Gateway
BICC: Bearer Independent Call Control
B-ISDN: Broadband Integrated Service Digital Network
BM: Bearer Management
BOSS: Business and Operation Supporting System
BRAS: Broadband Remote Access Server
BSS: Business Support System
BTS: Base Transceiver Station

C
CAMEL: Customized Applications for Mobile Network Enhanced Logic
CAN: Connectivity Access Network
CAP: Customized Applications for Mobile Network Enhanced Logic Application Protocol
CAPEX: Capital Expenditure
CCSA: China Communications Standards Association
CDMA: Code Division Multiple Access
CDN: Content Delivery Network
CMS: Content Management System
CORBA: Common Object Request Broker Architecture
CPE: Custom Premise Equipment
CRBT: Color Ring Back Tone
CRM: Customer Relationship Management
CS: Circuit Switching
CSCF: Call Session Control Function
CSE: Customized Applications for Mobile Network Enhanced Logic Service  Environment
CTI: Computer Telecommunication Integration

D
DAS: Direct Attached Storage
DC1: Toll Tandem and International Gateway
DDoS: Distributed Denial of Service
DiffServ: Differentiated Services
DOA: Direction of Arrival
DRM: Digital Rights Management
DSCP: Differentiated Service Code Point
DSL: Digital Subscriber Line
DSLAM: Digital Subscriber Line Access Multiplexer
DVB: Digital Video Broadcast
DWDM: Dense Wavelength Division Multiplexing

E
ECT: Explicit Call Transfer
EMC: Electromagnetic Compatibility
EPG: Electronic Program Guide
ERP: Enterprise Resource Planning
ETSI: European Telecommunications Standards Institute

F
FC: Fast Convergence
FGNGN: Focus Group on Next GenerationNetworks
FMC: Fixed Mobile Convergence
FPC: Fixed-line and PHS Convergence
FSVCCEm: Feasibility Study on Voice Call Continuity supportingEmergency Calls
FTTP: Fiber to the Premises
FTTZ: Fiber to the Zone

G
GMSC: Gateway Mobile Switching Center
GPRS: General Packet Radio Service
GSM: Global System for Mobile Communications
GW: Gateway

H
H-CSCF: Hyper Text Transfer Protocol-Call Server Control Function
HLR: Home Location Register
HP-MSDP: HP Mobile Service Delivery Platform
HSDPA: High Speed Downlink Packet  Access
HSS: Home Subscriber Server
HSUPA: High Speed Uplink Packet Access
HTTP: Hyper Text Transfer Protocol

I
IAD: Integrated Access Device
IAT: Intelligence Agent Technology
IBCF: Interconnect Border Control Function
I-BGF: Interconnect Border Gateway Function
ICS: IMS Centralized Supervision
I-CSCF: Interrogating-Call Session Control Function
ICT:  Information Communication Technology
IDC: Internet Data Center
IETF: Internet Engineering Task Force
iFC: Initial Filter Criteria
IM: Instant Messaging
IM-MGW: Internet Protocol Multimedia-Media Gateway
IMS: Internet Protocol Multimedia Subsystem
IM-SSF: Internet Protocol Multimedia-Service Switching Function
IN: Intelligent Network
INAP: Intelligent Network Application Protocol
IntServ: Integrated Service
IO: Input and Output
IP: Internet Protocol
IP-CAN: Internet Protocol -Connection Access Network
IPFIX: Internet Protocol Flow Information Export
IPGW: Internet Protocol Gateway
IPSec: Internet Protocol Security
IPTV: Internet Protocol Television
ISC: Internet Protocol Multimedia Subsystem Service Control
ISDN: Integrated Service Digital Network
ISP: Internet Service Provider
ISUP: Integrated Services User Part
IT: Information Technology
ITU: International Telecommunication Union
ITU-T: International Telecommunication Union-TelecommunicationStandardization Sector
IWF: Inter-Working Function

L
L2T: Layer 2 Termination
LSP: Label Switched Path

M
MAN: Metropolitan Area Network
MAP: Mobile Application Protocol
MExE: Mobile Execution Environment
MGCF: Media Gateway Control Function
MGW: Media Gateway
MMD: Multimedia Domain
MODEM: Modulator-Demodulator
MPLS: Multiple Protocol Label Switching
MRF: Media Resource Function
MRFC: Media Resource Function Control
MRFP: Media Resource FunctionProcessor
MSA: Mobile Security Agent
MSC: Mobile Switching Center
MUSE: Mobile Ubiquitous Service Environment

N
NACF: Network Attachment Control Function
NAS: Network Attached Storage
NASS: Network Attachment Subsystem
NE: Network Element
NGN: Next Generation Network
NTP: Network Time Protocol

O
OA: Office Automation
OAM: Operation and Maintenance
OMA: Open Mobile Alliance
OMIP: Open Mobile Internet Platform
OPEX: Operational Expenditure
OSA: Open Service Architecture
OSPF: Open Shortest Path First
OSS: Operation Support System

P
P2P: Point to Point
PA: Posture Agent
P-CSCF: Proxy-Call Session Control Function
PDA: Personal Digital Assistant
PDF: Policy Definition Function
PES: Public Switched Telephone Network Emulation Subsystem
PHS: Personal Handyphone System
PLMN: Public Land Mobile Network
PM: Policy Management
PON: Passive Optical Network
PS: Presence Service
PSS: Public Switched Telephone Network Simulation Subsystem
PSTN: Public Switched Telephone Network
PTT: Push-to-Talk

Q
QoS: Quality of Service

R
RACF: Resource and Admission Control Function
RACS: Resource and Admission Control Subsystem
RCEF: Resource Control Enforcement Function
RF: Radio Frequency
RRM: Radio Resource Management
RSVP: Resource Reservation Protocol
RTP: Real-time Transport Protocol
RTSP: Real Time Stream Protocol

S
SAE: System Architecture Evolution
SAN: Storage Area Network
SASAC: State-owned Assets Supervision and Administration Commission
SB: Service Broker
SBC: Session Border Controller
SCF: Service Control Function
SCIM: Service Control Interaction Management
SCP: Service Control Point
S-CSCF: Service-Call Session Control Function
SDEE: Security Device Event Exchange
SDM: Service Data Management
SDP: Service Delivery Platform
SGW: Signaling Gateway
SHLR: Smart Home Location Register
SIP: Session Initiation Protocol
SLA: Service Level Agreement
SLF: Subscription Locator Function
SM: Security Management
SNMPv3: Simple Network Management Protocol version 3
SNR: Signal-to-Noise Ratio
SOC: Security Operation Center
SoftDA: Soft Digital Assistant
SPAN: Services and Protocol for Advanced Network
SPDE: Service Provider Delivery Environment
SPDF: Service-based Policy Decision Function
SR: Service Router
SS: Softswitch
STB: Set-Top Box

T
TDD: Time Division Duplex
TDM: Time Division Multiplexing
TD-SCDMA: Time Division-Synchronous Code Division Multiple Access
TE: Traffic Engineering
TF: Transport Function
TG: Trunk Gateway
TINA: Telecom Information Network Architecture
TIPHON: Telecommunications and Internet Protocol Harmonization over Networks
TISPAN: Telecoms and Internet Converged Services and Protocols for Advanced Networks
TLS: Transport Layer Security
T-MGF: Trunking Media Gateway Function
TMSC: Tandem Mobile Softswitch Center
TOS: Type of Service

U
UAN: Unique and Universal Access Number
UCA: Uniform Circular Array
UE: User Equipment
ULA: Uniform Linear Array
UMA: Unlicensed Mobile Access
UMTS: Universal Mobile Telecommunications System
UPS: Uninterruptible Power Supply
UPSF: User Profile Server Function
URI: Unified Resource Identifier

V
VCC: Voice Call Continuity
VCR: Video Cassette Recorder
VGW: Voice Gateway
VMSC: Virtual Mobile Switching Center
VOD: Video on Demand
VoIP: Voice over Internet Protocol
VPN: Virtual Private Network

W
WCDMA: Wideband Code Division Multiple Access
WiFi: Wireless Fidelity
WiMAX: Worldwide Interoperability for Microwave Access
WLAN: Wireless Local Area Network
WMN: Wireless Mesh Network