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ETSI ETS 300 057

Integrated Services Digital Network (ISDN); Call Waiting (CW) supplementary service; Functional capabilities and information flows
standard by European Telecommunications Standards Institute, 05/01/1992
Publisher: ETSI

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Stage 2 descriptions for priority 1 and 2 services covered in the MoU on ISDN

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Transmission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH); Multiplexing structure..

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Integrated Services Digital Network (ISDN); Videotelephony teleservice; Part 2: Electroacoustic char..

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Digital cellular telecommunications system (Phase 2+); Voice Group Call Service (VGCS) - Stage 1 (3G..

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Terrestrial Trunked Radio (TETRA); Conformance testing specification; Part 5: Security; Sub-part 1: ..

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