Digital Cellular Telecommunications System (Phase 2+); General Packet Radio Service (GPRS); Service Description; Stage 1 GSM 02.60 Version 6.2.1 Release 1997
英文名称:Digital Cellular Telecommunications System (Phase 2+); General Packet Radio Service (GPRS); Service Description; Stage 1 GSM 02.60 Version 6.2.1 Release 1997