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TS 29.018 (CT1)
SGSN-VLR Gs interface –
Layer 3

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V14.0.0 (PDF)    2017/03    68 p.
V13.2.0    2015/09    67 p.
V12.5.0    2014/06    67 p.
V11.7.0    2013/12    67 p.
V10.7.0    2012/09    64 p.
V9.3.0    2012/09    64 p.
V8.5.0    2012/09    62 p.
V7.3.0    2006/12    61 p.
V6.5.0    2006/12    61 p.
V5.5.0    2003/10    61 p.
V4.5.0    2003/10    58 p.
V3.11.0    2003/10    60 p.

Rapporteur:  Mr. Aghili, Behrouz
Antecedent:  TS 09.18    

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 23.060. The required procedures between VLR and SGSN are defined in detail in the present document.


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1   Scope [R3]   PDF-p. 8
2   References [R3]
3   Definitions, symbols and abbreviations [R3]   PDF-p. 11
4   Description of the association between a VLR and an SGSN [R3]
5   Paging for non-GPRS services procedure [R3]
6   Location Update for non-GPRS services procedure [R3]   PDF-p. 16      Up
7   Non-GPRS alert procedure [R3]   PDF-p. 23
8   Explicit IMSI detach from GPRS services procedure [R3]
9   Explicit IMSI detach from non-GPRS services procedure [R3]

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