Table of Contents

Intellectual Property Rights
Foreword
1 Scope
2 References
3 Definitions and abbreviations
   3.1 Definitions
   3.2 Abbreviations
4 General
   4.1 Overview
   4.2 Architecture
5 Handling of completion of calls to busy subscriber
   5.1 CCBS Timers
   5.2 Information flows
   5.3 Activation
   5.4 Deactivation
   5.5 Interrogation
   5.6 Messages and their contents
6 Monitoring and CCBS Call Reporting
   6.1 Monitoring
   6.2 MSC/VLR Monitoring Model
   6.3 CCBS Call Reporting
   6.4 Location Update
7 Mobility
   7.1 Mobility during Activation
   7.2 Number used within CCBS Call
   7.3 MS does Location Update
   7.4 Mobility during CCBS Call in the destination
       network
8 Interaction with other supplementary services
   8.1 Call forwarding unconditional (CFU)
   8.2 Call forward on busy (CFB)
   8.3 Call forwarding on no reply (CFNRy)
   8.4 Call forwarding on MS not reachable (CFNRc)
   8.5 Call Waiting (CW)
   8.6 Multiparty service (MPTY)
   8.7 Closed user group (CUG)
   8.8 Advice Of Charge (AoC)
   8.9 Barring of all outgoing calls (BAOC)
   8.10 Barring of outgoing international calls
        (BOIC)
   8.11 Barring of outgoing international calls except
        those directed to the home PLMN country
        (BOIC-exHC)
   8.12 Barring of all incoming calls (BAIC)
   8.13 Barring of incoming calls when roaming outside
        the home PLMN country (BIC-Roam)
   8.14 Completion of calls to busy subscriber (CCBS)
9 Interaction with other network features
   9.1 Customised Applications for Mobile network
       Enhanced Logic (CAMEL)
   9.2 Support of Optimal Routeing (SOR)
10 Interworking with other networks
   10.1 Interworking with network entities not
        supporting CCBS
11 Network entity functions
   11.1 Originating Network Processes
   11.2 Destination Network Processes
   11.3 Processes and procedures common in originating
        and destination network entities
12 Information stored in the HLRs
   12.1 Originating Network Data
   12.2 Destination Network Data
   12.3 Transfer of information from HLR to VLR
13 State transition model
   13.1 State transition model for the CCBS service
        in the originating network
   13.2 State transition model for the CCBS service
        in the destination network
   13.3 State transition model for a CCBS Request
   13.4 Information stored in the VLRs
Annex A (Informative): Message flow diagrams showing
        a successful CCBS request
Annex B (Informative): Status of Technical
        Specification GSM 03.93
History

Abstract

Gives the stage 2 description of the Completion of Calls to Busy Subscriber (CCBS) supplementary service.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	SMG 3