ETSI TS 144 064-2005 数字蜂窝通信系统(第2+阶段).移动台-伺服GPRS支持节点(MS-SGSN)逻辑链路控制(LLC)层规范.3GPP TS 44.064(版本6.1.0,第6次发布)
Digital cellular telecommunications system (Phase 2+); Mobile Station - Serving GPRS Support Node (MS-SGSN) Logical Link Control (LLC) Layer Specification 3GPP TS 44.064 Version 6.1.0 Release 6