ETSI TS 148 014-2001 数字蜂窝通信系统(第2+阶段).通用分组无线业务(GPRS).基站系统(BSS)-伺服GPRS支持节点(SGSN)接口.Gb接口第1层.3GPP TS 48.014(版本4.0.0,第4次发布)
Digital Cellular Telecommunications System (Phase 2+); General Packet Radio Service (GPRS); Base Station System (BSS) - Serving GPRS Support Node (SGSN) Interface; Gb Interface Layer 1 3GPP TS 48.014 Version 4.0.0 Release 4