ETSI TS 148 014-2017 数字蜂窝通信系统(第2+阶段)(GSM全球移动通信系统);通用分组无线业务(GPRS);基站系统(BSS)-GPRS服务支持节点(SGSN)接口;Gb接口第1层(V14.0.0;3GPP TS 48.014,版本14.0.0 发行版本14)
Digital cellular telecommunications system (Phase 2+) (GSM); General Packet Radio Service (GPRS); Base Station System (BSS) - Serving GPRS Support Node (SGSN) interface; Gb interface Layer 1 (V14.0.0; 3GPP TS 48.014 version 14.0.0 Release 14)