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TS 09.18 (CT1)
General Packet Radio Service (GPRS) – Serving GPRS Support Node (SGSN) - Visitors Location Register (VLR); Gs interface layer 3 specification

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(P) GSM Rel-98 v7.5.0    2001/12    53 p.
(P) GSM Rel-97 v6.7.0    2001/12    53 p.


Rapporteur:  DAWES, Peter
Descendant(s):  TS 29.018    


This TS specifies or references 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.

This TS specifies the layer 3 messages and procedures on the Gs interface to allow coordination between databases and to relay certain messages related to GSM circuit switched services over the GPRS subsystem.

The functional split between VLR and SGSN is defined in TS 03.60. The required procedures between VLR and SGSN are defined in detail in this TS.


 

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1   Scope   PDF-p. 8
2   References
3   Definitions, symbols and abbreviations   PDF-p. 11
4   Description of the association between a VLR and an SGSN
5   Paging for non-GPRS services procedure   PDF-p. 13
6   Location Update for non-GPRS services procedure   PDF-p. 15
7   Non-GPRS alert procedure   PDF-p. 19
8   Explicit IMSI detach from GPRS services procedure
9   Explicit IMSI detach from non-GPRS services procedure      Up
10   Implicit IMSI detach from non-GPRS services procedure
11   VLR failure procedure
12   SGSN failure procedure
13   HLR failure
14   MS Information procedure
15   MM information procedure
16   Error Handling and Future Compatibility   PDF-p. 27
17   Message functional definitions and contents
17.1   Message Contents
17.1.1   BSSAP+-ALERT-ACK message      Up
17.1.2   BSSAP+-ALERT-REJECT message   PDF-p. 29
17.1.3   BSSAP+-ALERT-REQUEST message
17.1.4   BSSAP+-GPRS-DETACH-ACK message
17.1.5   BSSAP+-GPRS-DETACH-INDICATION message   PDF-p. 30
17.1.6   BSSAP+-IMSI-DETACH-ACK message
17.1.7   BSSAP+-IMSI-DETACH-INDICATION message
17.1.8   BSSAP+-LOCATION-UPDATE-ACCEPT message
17.1.9   BSSAP+-LOCATION-UPDATE-REJECT message
17.1.10   BSSAP+-LOCATION-UPDATE-REQUEST message   PDF-p. 32
17.1.11   BSSAP+-MM-INFORMATION-REQUEST
17.1.12   BSSAP+-MOBILE-STATUS message      Up
17.1.13   BSSAP+-MS-ACTIVITY-INDICATION message
17.1.14   BSSAP+-MS-INFORMATION-REQUEST message
17.1.15   BSSAP+-MS-INFORMATION-RESPONSE message   PDF-p. 34
17.1.16   BSSAP+-MS-UNREACHABLE message
17.1.17   BSSAP+-PAGING-REJECT message
17.1.18   BSSAP+-PAGING-REQUEST message
17.1.19   BSSAP+-RESET-ACK message      Up
17.1.20   BSSAP+-RESET-INDICATION message
17.1.21   BSSAP+-TMSI-REALLOCATION-COMPLETE message
18   Message format and information element coding   PDF-p. 38
19   List of system variables
A   Change History   PDF-p. 51      Up

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