Table of Contents

Foreword
1 Scope
2 Normative references
3 Definitions
4 Abbreviations
5 Description
6 Operational requirements
   6.1 Provision and withdrawal
   6.2 Requirements on the originating network side
   6.3 Requirements on the destination network side
7 Coding requirements
   7.1 ISUP protocol
   7.2 Application Service Element (ASE) for CCBS
   7.3 ASN.1 module
8 State definitions
9 Signalling procedures
   9.1 Activation, deactivation and registration
   9.2 Actions at the originating local exchange
   9.3 Actions at a transit exchange
   9.5 Actions at the incoming international gateway
       exchange
   9.6 Actions at the destination local exchange
   9.7 Use of TCAP and SCCP
   9.8 ASE for CCBS
   9.9 Dialogue
10 Interaction with other networks
   10.1 Interworking with an ISUP network without ISUP
        version 2 capability
   10.2 Interworking with a network without CCBS-ASE
        capability
   10.3 Interworking with a network without
        SCCP/TCAP/ISUP capability
   10.4 Interworking with Public Switched Telephone
        Network (PSTN) user
   10.5 Interworking with a Public Land Mobile Network
        (PLMN)
   10.6 Procedures for interworking with private ISDNs
11 Interaction with other supplementary services
   11.1 Advice of charge services
   11.2 Call waiting
   11.3 Call hold
   11.4 Call transfer
   11.5 Number identification services
   11.6 Closed user group
   11.7 Completion of calls to busy subscriber
   11.8 Conference services
   11.9 Direct dialling in
12 Parameter values (timers)
   12.1 Timers in the originating local exchange
   12.2 Timers in the destination local exchange
   12.3 Interworking timers
13 Dynamic description
   13.1 SDL diagrams for ISUP
   13.2 SDL diagrams for ASE
Annex A (informative): Signalling flows
Annex B (normative): Coding of the compatibility
        information]
Annex C (informative): Definition of operations
        for the CCBS supplementary service
Annex D (informative): Bibliography
History

Abstract

Specifies the stage three of the Completion of Calls to Busy Subscriber (CCBS) supplementary service for the pan-European Integrated Services Digital Network (ISDN).

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	SPS 1
Supersedes	PRETS 300 356-18 : AUG 93