2　Terms and Symbols

Abbreviation　Full Name

APN　Access Point Name

AUC　Authentication Center

BG　Border Gateway

BLER　Block Error Rate

BITS　Building Integrated Timing（Supply）System

CAP　CAMEL Application Part

CG　Charging Gateway

CI　Cell Identity

CMN　Call Mediation Node

CN　Core Network

CS　Circuit Switching

DNS　Domain Name Server

DPC　Destination Point Code

GCI　Global Cell Identity

GGSN　Cateway GRPS Support Node

GMSC　Gateway Mobile Switching Center

GMSC Server　Gateway Mobile Switching Center Server

GMGW　Gateway Media Gate-Way

GT　Global Title

HLR　Home Location Register

HON　Handover Number

HSPA　High Speed Packet Access

HSDPA　High Speed Downlink Packet Access

HSUPA　High Speed Uplink Packet Access

HSTP　High Signaling Transfer Point

IMSI　International Mobile Subscriber Identity

INAP　Intelligent Network Application Part

LAC　Location Area Code

LAI　Location Area Identity

LSTP　Low Signaling Transfer Point

MCC　Mobile Country Code

MGW　Media Gate-way

MNC　Mobile Network Code

MSC　Mobile Switch Center

MSC Server　Mobile Switch Center Server

MSIN　Mobile Subscriber Identification Number

MSISDN　Mobile Subscriber ISDN Number

MSRN　Mobile Station Roaming Number

MTP　Message Transfer Part

P-TMSI　Packet-temporary Mobile Subscriber Identity

PDN　Packet Data Network

PS　Packet Switching

RAC　Routing Area Code

RAI　Routing Area Identity

RNC　Radio Network Controller

SCCP　Signaling Connection Control Part

SGSN　Serving GPRS Support Node

SMSC　Short Message Service Center

STP　Signaling Transfer Point

TMSC　Tandem MSC

TMSC Server　Tandem MSC Server

TMSI　Temporary Mobile Subscriber Identity

UARFCN　UTRA Absolute Radio Frequency Channel Number

UE　User Equipment

USIM　Universal Subsciber Identity Module

UTRA　Universal Telecommunication Radio Access

UTRAN　UMTS Terrestrial Radio Access Network

VLR　Visit Location Register