22.3 Erasure procedure

29.0023GPPMobile Application Part (MAP) specificationRelease 17TS

22.3.1 General

The erasure procedure is used to erase data related to a supplementary service in the HLR. The erasure procedure is a fully transparent communication between the MS and the HLR, except that some services may be invoked as a result of the procedure, as described in the clauses below.

The erasure procedure is shown in figure 22.3.1/1.

The following services may be used:

MAP_PROCESS_ACCESS_REQUEST (see clauses 8 and 25);

MAP_TRACE_SUBSCRIBER_ACTIVITY (see clauses 9 and 25);

MAP_PROVIDE_IMSI (see clauses 8 and 25);

MAP_FORWARD_NEW_TMSI (see clauses 8 and 25);

MAP_AUTHENTICATE (see clauses 8 and 25);

MAP_SET_CIPHERING_MODE (see clauses 8 and 25);

MAP_CHECK_IMEI (see clauses 8 and 25);

MAP_READY_FOR_SM (see clauses 12 and 25);

MAP_INSERT_SUBSCRIBER_DATA (see clauses 8 and 25);

The following service is certainly used:

MAP_ERASE_SS (defined in clause 11).

1) A_CM_SERV_REQ (Note 1)

2) MAP_PROCESS_ACCESS_REQUEST (Note 2)

3) A_ERASE_SS (Note 1)

4) MAP_ERASE_SS_req/ind

5) MAP_ERASE_SS_req/ind

6) MAP_ERASE_SS_rsp/cnf

7) MAP_ERASE_SS_rsp/cnf

8) A_ERASE_SS ack (Note 1)

9) MAP_INSERT_SUBSCRIBER_DATA_req/ind (Note 3)

10) MAP_INSERT_SUBSCRIBER_DATA_rsp/cnf (Note 3)

NOTE 1: For details of the procedure on the radio path, see 3GPP TS 24.008 [35], 3GPP TS 24.010 [36], 3GPP TS 24.08x and 3GPP TS 24.09x. Services shown in dotted lines indicate the trigger provided by the signalling on the radio path, and the signalling triggered on the radio path.

NOTE 2: For details of the Process Access Request procedure, refer to clause 25.4 in the present document.

NOTE 3: Services printed in italics are optional.

Figure 22.3.1/1: Message flow for supplementary service erasure

22.3.2 Procedure in the MSC

The MSC procedure for erasure is identical to that specified for registration in clause 22.2.2. The text and diagrams in clause 22.2.2 apply with all references to registration changed to erasure.

22.3.3 Procedure in the VLR

The VLR procedure for erasure is identical to that specified for registration in clause 22.2.3. The text and diagrams in clause 22.2.3 apply with all references to registration changed to erasure.

22.3.4 Procedure in the HLR

The HLR procedure for erasure is identical to that specified for registration in clause 22.2.4. The text and diagrams in clause 22.2.4 apply with all references to registration changed to erasure.