SS-ETS-300356-17 | Integrated Services Digital Network (ISDN) - Signalling System No.7 -ISDN User Part (ISUP) version 2 for the international interface - Part 17: Call Waiting (CW) supplementary service _ITU-T Recommendation Q.733, section 1 (1992), modified_ | Document Center, Inc.

SS-ETS-300356-17 › Complete Document History
Integrated Services Digital Network (ISDN) - Signalling System No.7 -ISDN User Part (ISUP) version 2 for the international interface - Part 17: Call Waiting (CW) supplementary service _ITU-T Recommendation Q.733, section 1 (1992), modified_

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EDITION 1 - ENGLISH LANGUAGE EDITION - June 30, 1995