3Technical Specification Group Access Network;UTRAN Iu Interface:general aspects and principles (Release5). 3GPP TS25.410V5.4.0 . 2004
4Technical Specification Group Radio Access Network;UTRAN overall description (Release4). 3GPP TS25.401V4.6.0 . 2002
5Technical Specification Group Core Network and Terminals;General requirement on interworking between the public Land Mobile Network(PLMN)and the Integrated Services Digital Network(ISDN)or Public Switched Telephone Network(PSTN)(Release4). 3GPP TS29.007V4.14.0 . 2005
63rd GPP Technical Specification Group Services and Systems Aspects:Network architecture,Release 4. 3GPP TS 44.118 V4.8.0 . 2003
73GPP.Technical Specification Group Service andSystem Aspects;Mandatory speech CODEC speech processing functions;AMRspeech CODEC;General Description. 3GPP TS 26.071 V5.0.0 . 2002
