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ITU Q.87.1:1993

ITU Q.87.1:1993 User To User Signalling (uus) Describes the Stage 2 of the User-to-User Signalling supplementary service supported by an ISDN. The Stage 2 descriptions are comprised of the switching functions and signalling information flows.

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Table of Contents

1User-to-UserSignalling(UUS)
1.1Scope
1.2References
1.3Definitions
1.4Symbolsandabbreviations
1.5Description
1.6Derivationofthefunctionalmodel
1.7Informationflows
1.8SDLdiagramsforfunctionalentities
1.9Functionalentityactions(FEAs)
1.10Allocationoffunctionalentitiestophysical
locations

Abstract

Describes the Stage 2 of the User-to-User Signalling supplementary service supported by an ISDN. The Stage 2 descriptions are comprised of the switching functions and signalling information flows.

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