Table of Contents

Intellectual Property Rights
Foreword
1 Scope
2 References
3 Definitions and Abbreviations
   3.1 Definitions
   3.2 Abbreviations
4 Architecture
   4.1 General
   4.2 Routeing principles
   4.3 Visited MSC with additional SIWF
       functionality (SIWFC)
   4.4 SIWFS - Shared Inter Working Function Server
   4.5 K Interface and Signalling
   4.6 Fixed Network
5 Procedures
   5.1 General
   5.2 Mobile Originated calls
   5.3 Mobile Terminated calls
   5.4 In Call Modification (ICM)
   5.5 Modifications in a connection
   5.6 Release
   5.7 Negotiation of parameters
   5.8 Inter MSC handover
   5.9 Reset
6 SIWF and Supplementary Services
   6.1 Number Identification Supplementary Services
   6.2 Call Offering Supplementary Services
   6.3 Call Waiting (CW)
   6.4 Closed User Group (CUG)
   6.5 User-to-User Supplementary Services
   6.6 Charging Supplementary Services
   6.7 Call Restrictions
   6.8 Support of Private Numbering Plan (SPNP)
   6.9 Call Completion on Busy Subscriber (CCBS)
7 Interaction with CAMEL
8 Operation and Maintenance Aspects
9 Charging
10 Interception
Annex A (informative): Change Request History
History

Abstract

Defines the stage two description of the Shared Inter Working Function (SIWF) on Global System for Mobile communications (GSM). A stage one description does not exist because this service is not visible to the service subscribers and users. This stage two identifies the functional Capabilities and information flows needed to support the service. The signalling system protocols and switching functions needed to implement this service are defined in the relevant specifications.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	SMG 4