API |
Application Program Interface |
IPv6 |
Internet Protocol version 6 |
SCS |
Service Capability Server |
AS |
Application Server |
IP-CAN |
IP-Connectivity Access Network |
S-CSCF |
Serving-CSCF |
BCSM |
Basic Call State Model |
IP-SM-GW |
IP Short Message Gateway |
SDP |
Session Description Protocol |
BG |
Border Gateway |
ISDN |
Integrated Services Digital Network |
SGSN |
Serving GPRS Support Node |
BGCF |
Breakout Gateway Control Function |
ISIM |
IMS SIM |
SLF |
Subscription Locator Function |
BS |
Bearer Service |
ISP |
Internet Service Provider |
SSF |
Service Switching Function |
CAMEL |
Customized Application Mobile Enhanced Logic |
ISUP |
ISDN User Part |
SS7 |
Signaling System 7 |
CAP |
Camel Application Part |
IWF |
Interworking Function |
SIM |
Subscriber Identity Module |
CDR |
Charging Data Record |
NP |
Number portability |
SIP |
Session Initiation Protocol |
CN |
Core Network |
MAP |
Mobile Application Part |
S-GW |
Signaling Gateway |
CS |
Circuit Switched |
MGCF |
Media Gateway Control Function |
TAS |
Telephony Application Server |
CSCF |
Call Session Control Function |
MGF |
Media Gateway Function |
T-GRUU |
Temporary Globally Routable User Agent URI |
CSE |
CAMEL Service Environment |
MRB |
Media Resource Broker |
THIG |
Topology Hiding Inter-network Gateway |
DHCP |
Dynamic Host Configuration Protocol |
MRFC |
Multimedia Resource Function Controller |
TrGW |
Transition Gateway |
DNS |
Domain Name System |
MRFP |
Multimedia Resource Function Processor |
UE |
User Equipment |
ECN |
Explicit Congestion Notification |
NAI |
Network Access Identifier |
UMTS |
Universal Mobile Telecommunications System |
ENUM |
E.164 Number Mapping |
NAPT |
Network Address Port Translation |
URL |
Universal Resource Locator |
GGSN |
Gateway GPRS Support Node |
NAT |
Network Address Translation |
USIM |
UMTS SIM |
GPRS |
General Packet Radio Service |
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GLMS |
Group and List Management Server |
NA(P)T-PT |
Network Address (Port-Multiplexing) Translation-Protocol Translation |
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GMLC |
Gateway Mobile Location Centre |
II-NNI |
Inter-IMS Network to Network Interface |
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GRUU |
Globally Routable User Agent URI |
OSA |
Open Services Architecture |
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GUP |
Generic User Profile |
P-CSCF |
Proxy-CSCF |
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HSS |
Home Subscriber Server |
PCC |
Policy and Charging Control |
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IBCF |
Interconnection Border Control Function |
PCEF |
Policy and Charging Enforcement Function |
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I-CSCF |
Interrogating-CSCF |
PCRF |
Policy and Charging Rules Function |
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IETF |
Internet Engineering Task Force |
PDN |
Packet Data Network |
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IM |
IP Multimedia |
PDP |
Packet Data Protocol e.g., IP |
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IMC |
IMS Credentials |
P-GRUU |
Public Globally Routable User Agent URI |
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IMS |
IP Multimedia Core Network Subsystem |
PLMN |
Public Land Mobile Network |
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IMS |
ALG IMS Application Level Gateway |
PSI |
Public Service Identity |
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IMSI |
International Mobile Subscriber Identifier |
PSTN |
Public Switched Telephone Network |
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IN |
Intelligent Network |
QoS |
Quality of Service |
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IP |
Internet Protocol |
RAB |
Radio Access Bearer |
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IPv4 |
Internet Protocol version 4 |
RFC |
Request for Comments |