CONTENTS

 1     Scope
 2     References
 3     Definitions
 4     Abbreviations
 5     Conventions
 6     Description
        6.1     General description
        6.2     Specific terminology
        6.3     Qualifications on the applicability to telecommunication services
        6.4     State definitions
 7     Operational requirements
        7.1     Provision/withdrawal
        7.2     Requirements on the originating network side
        7.3     Requirements on the terminating network
        7.4     Requirements on the transit network
 8     Coding requirements
        8.1     Introduction
        8.2     Coding requirements
                  8.2.1     ISUP protocol
                  8.2.2     ASE for CCNR
                  8.2.3     Abstract syntax, general
        8.3     ASN.1 module
 9     Signalling requirements
        9.1     Activation/deactivation/registration
                  9.1.1     Activation
                  9.1.2     Deactivation
                  9.1.3     Registration
        9.2     Erasure
        9.3     Invocation and operation
                  9.3.1     Actions at the originating local exchange
                  9.3.2     Actions at a transit exchange
                  9.3.3     Actions at the outgoing international gateway exchange
                  9.3.4     Actions at the incoming international gateway exchange
                  9.3.5     Actions at the destination local exchange
        9.4     Use of TC and SCCP
                  9.4.1     Routing in the SCCP network
                  9.4.2     Number information used for routing
                  9.4.3     SCCP message return procedure
                  9.4.4     Primitives used between the CCNR-ASE and TC
        9.5     Dialogue
                  9.5.1     General
                  9.5.2     Dialogue beginning
                  9.5.3     Dialogue continuation
                  9.5.4     Dialogue end
10     Interaction with other supplementary services
       10.1     Call Waiting (CW)
       10.2     Call transfer services
                 10.2.1     Explicit Call Transfer (ECT)
                 10.2.2     Single-step call transfer
       10.3     Connected Line Identification Presentation (COLP)
       10.4     Connected Line Identification Restriction (COLR)
       10.5     Calling Line Identification Presentation (CLIP)
       10.6     Calling Line Identification Restriction (CLIR)
       10.7     Closed User Group (CUG)
       10.8     Conference Calling (CONF)
       10.9     Direct-dialling-in (DDI)
      10.10     Call diversion services
                10.10.1     Call forwarding activated by user A
                10.10.2     Call forwarding activated by user B
      10.11     Line hunting
      10.12     Three-Party service (3PTY)
      10.13     User-to-User Signalling (UUS)
      10.14     Multiple Subscriber Number (MSN)
      10.15     Call Hold (HOLD)
      10.16     Advice of charge
                10.16.1     AOC, charging information at call set-up time (AOC-S)
                10.16.2     AOC, charging information during the call (AOC-D)
                10.16.3     AOC, charging information at the end of a call (AOC-E)
      10.17     Sub-addressing (SUB)
      10.18     Terminal Portability (TP)
      10.19     Completion of Calls to Busy Subscriber (CCBS)
      10.20     Malicious Call Identification (MCID)
      10.21     Reverse charging (REV) (for national use)
      10.22     Multi-level precedence and preemption (MLPP)
      10.23     Private Numbering Plan (PNP) (for further study)
      10.24     International Telecommunication Charge Card (ITCC)
      10.25     Global Virtual Network Service (GVNS)
      10.26     Completion of Calls on No Reply (CCNR)
11     Interaction with other networks
       11.1     Interworking with an ISUP network without an ISUP that fully supports the CCNR capability
       11.2     Interworking with a network without CCNR-ASE capability
       11.3     Interworking with a network without SCCP/TC capability
       11.4     Interworking with an intermediate network without 1993 version of SCCP capability
       11.5     Interworking with PSTN with analogue subscribers using the CCNR service
       11.6     Interworking with PSTN user
       11.7     Procedures for interworking with private ISDNs
                 11.7.1     Provision/withdrawal
                 11.7.2     Normal procedure
                 11.7.3     Exceptional procedures
       11.8     Interworking between two networks supporting CCNR
12     Signalling flows
       12.1     Normal call - Destination B provides the CCNR possible indicator
       12.2     Normal call – Successful CCNR request followed by a successful CCNR call set‑up
       12.3     Unsuccessful CCNR request, terminal activated
       12.4     Unsuccessful CCNR request, network decision
       12.5     Successful CCNR request followed by an unsuccessful CCNR call set-up
       12.6     B idle at CCNR request from A
       12.7     A busy when B becomes free
13     Parameter values
       13.1     Timers in the originating local exchange
       13.2     Timers in the destination local exchange
       13.3     Interworking timers
14     Dynamic description