ETSI ETS 300056-ed.1

Integrated Services Digital Network (ISDN); Call Waiting (CW) supplementary service; Service Description

STANDARD published on 18.10.1991

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The information about the standard:

Designation standards: ETSI ETS 300056-ed.1
Publication date standards: 18.10.1991
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: European technical standard
Category: Technical standards ETSI