Introduction

09.163GPPGeneral Packet Radio Service (GPRS)Gs interface network service specificationServing GPRS Support Node (SGSN) - Visitors Location Register (VLR)TS

The present document specifies or references the necessary information to provide a reliable transfer of signalling messages between the Serving GPRS Support Node (SGSN) and the Visitors Location Register (VLR). This reliable transfer of messages is provided by the Network Service Part (NSP) of the Signalling System No 7 (SS7). The present document specifies or references the subset of MTP and SCCP to be used in the Gs interface.