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ГОСТы, СНиПы, РД, ПБ, СП, ОР, СТО... // 33 Телекоммуникации. Аудио- и видеотехника // ETSI TS 123 517 V8.0.0 (2007-12) Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); IP Multimedia Subsystem (IMS); Functional architecture (3GPP TS 23.517 version 8.0.0 Release 8)
ГОСТы, СНиПы, РД, ПБ, СП, ОР, СТО... // 33 Телекоммуникации. Аудио- и видеотехника // ETSI TS 123 517 V8.0.0 (2007-12) Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); IP Multimedia Subsystem (IMS); Functional architecture (3GPP TS 23.517 version 8.0.0 Release 8)