20.4 Subscriber Identity procedure

29.0023GPPMobile Application Part (MAP) specificationRelease 17TS

In the subscriber identity procedure the IMSI of the subscriber is retrieved from the HLR. The procedure is shown in figure 20.4/1.

1) Identity request

2) MAP_SEND_IMSI_req/ind

3) MAP_SEND_IMSI_rsp/cnf

4) Identity confirm

Figure 20.4/1: The subscriber identity procedure

20.4.1 Procedure in the VLR

The subscriber identity process in the VLR is shown in figure 20.4/2. The MAP process invokes macros not defined in this clause; the definitions of these macros can be found as follows:

Receive_Open_Cnf see clause 25.1.2;

Check_Confirmation see clause 25.2.2.

20.4.2 Procedure in the HLR

The subscriber identity process in the HLR is shown in figure 20.4/3. The MAP process invokes macros not defined in this clause; the definitions of these macros can be found as follows:

Receive_Open_Ind see clause 25.1.1;

Check_Indication see clause 25.2.1.

Figure 20.4/2: Process Send_IMSI_VLR

Figure 20.4/3: Process Send_IMSI_HLR