ETSI TS 144 065-2004 数字蜂窝通信系统(第2+阶段).移动台(MS)-伺服GPRS支持节点(SGSN).相关子网集中协议(SNDCP).3GPP TS 44.065(版本4.3.0,第4次发布)
Digital cellular telecommunications system (Phase 2+); Mobile Station (MS) - Serving GPRS Support Node (SGSN); Subnetwork Dependent Convergence Protocol (SNDCP) 3GPP TS 44.065 Version 4.3.0 Release 4