Gr Interface

Gr interface is between the SGSN and HLR.

Overview

Gr interface is between the SGSN and HLR.  It uses MAP over TCAP, SCCP, SIGTRAN XUA, SCTP transport protocol.

Network Diagram

Messages

  • SendAuthenticationInfoArg
  • SendAuthenticationInfoRes
  • UpdateLocationArg
  • UpdateLocationRes
  • InsertSubscriberDataArg
  • InsertSubscriberDataRes

Call Flows

Standards

  • 3GPP TS 09.02 (MAP v1, MAP v2)
  • 3GPP TS 29.002 (MAP v3) - MAP for 3G UMTS & GSM (Release 99 and later)