Table of Contents

Intellectual Property Rights
Foreword
Foreword
Introduction
1 Scope
2 References
   2.1 Normative references
   2.2 Informative references
3 Definitions, symbols and abbreviations
4 Description of the association between a VLR and an SGSN
   4.1 Association at the VLR
   4.2 Association at the SGSN
5 Paging for non-GPRS services procedure
   5.1 General description
   5.2 Procedures in the VLR
   5.3 Procedures in the SGSN
6 Location Update for non-GPRS services procedure
   6.1 General description
   6.2 Procedures in the SGSN
   6.3 Procedures in the VLR
7 Non-GPRS alert procedure
   7.1 General description
   7.2 Procedures in the VLR
   7.3 Procedures in the SGSN
8 Explicit IMSI detach from GPRS services procedure
   8.1 General description
   8.2 Procedures in the SGSN
   8.3 Procedures in the VLR
9 Explicit IMSI detach from non-GPRS services procedure
   9.1 General description
   9.2 Procedures in the SGSN
   9.3 Procedures in the VLR
10 Implicit IMSI detach from non-GPRS services procedure
   10.1 General description
   10.2 Procedures in the SGSN
   10.3 Procedures in the VLR
11 VLR failure procedure
   11.1 General description
   11.2 Procedures in the VLR
   11.3 Procedures in the SGSN
12 SGSN failure procedure
   12.1 General description
   12.2 Procedures in the SGSN
   12.3 Procedures in the VLR
13 HLR failure
   13.1 General description
   13.2 Procedures in the SGSN
14 MS Information procedure
   14.1 General description
   14.2 Procedures in the VLR
   14.3 Procedures in the SGSN
15 MM information procedure
   15.1 General description
   15.2 Procedures in the VLR
   15.3 Procedures in the SGSN
16 Error Handling and Future Compatibility
   16.1 General
   16.2 Message too short
   16.3 Unknown or unforeseen message type
   16.4 Missing mandatory information element
   16.5 IEs unknown or unforeseen in the message
   16.6 Out of sequence IEs
   16.7 Repeated IEs
   16.8 Syntactically incorrect mandatory IE
   16.9 Syntactically incorrect optional IEs
   16.10 Conditional IE errors
   16.11 IEs with semantically incorrect contents
17 Message functional definitions and contents
   17.1 Message Contents
18 Message format and information element coding
   18.1 Overview
   18.2 Message type
   18.3 Information Element Identifiers
   18.4 Information elements
19 List of system variables
   19.1 Timers
   19.2 Retry counters
Annex A (informative): Change History
History

Abstract

Describes procedures used on the Serving GPRS Support Node (SGSN) to Visitors Location Register (VLR) interface for interoperability between GSM circuit switched services and GSM packet data services.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	3GPP CN 1