ETSI TS 100 518 PDF

Published Date: 08/01/1999

Digital cellular telecommunications system (Phase 2+) (GSM); Closed User Group (CUG) Supplementary Services - Stage 1 (GSM 02.85 version 7.0.0 Release 1998)

Published Date: 01/01/1999

Digital cellular telecommunications system (Phase 2+) (GSM); Closed User Group (CUG) Supplementary Services - Stage 1 (GSM 02.85 version 6.0.0 Release 1997)

Published Date: 10/01/2000

Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) and Signalling System No.7 (SS7) protocols; Signalling application for the mobility management service on the alpha interface; Part 1: Protocol specification

Published Date: 08/01/2020

Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system (3GPP TS 21.101 version 16.0.0 Release 16)

Published Date: 01/01/2021

Universal Mobile Telecommunications System (UMTS); LTE; Web Real-Time Communications (WebRTC) access to the IP Multimedia (IM) Core Network (CN) subsystem (IMS); Stage 3; Protocol specification (3GPP TS 24.371 version 16.1.0 Release 16)

Published Date: 10/01/2018

Digital Video Broadcasting (DVB); Subtitling systems

Published Date: 09/30/2014

Published Date: 09/30/2014