22.3 Erasure procedure

09.023GPPMobile Application Part (MAP) specificationTS

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 subclauses below.

The erasure procedure is shown in figure 22.3.1/1.

The following services may be used:

MAP_PROCESS_ACCESS_REQUEST (defined in subclauses 8 and 25);

MAP_TRACE_SUBSCRIBER_ACTIVITY (defined in clauses 9 and 25);

MAP_PROVIDE_IMSI (defined in clauses 8 and 25);

MAP_FORWARD_NEW_TMSI (defined in clauses 8 and 25);

MAP_AUTHENTICATE (defined in clauses 8 and 25);

MAP_SET_CIPHERING_MODE (defined in clauses 8 and 25);

MAP_CHECK_IMEI (defined in clauses 8 and 25);

MAP_READY_FOR_SM (defined in clauses 12 and 25);

MAP_INSERT_SUBSCRIBER_DATA (defined in clauses 8 and 25);

MAP_ERASE_SS (defined in clause 11).

+—-+ +—-+ B +—-+ D +—-+
ª MS ª————ªMSC ª——+——-ªVLR ª—-+——-ªHLR ª
+—-+ +—-+ +—-+ +—-+
ª ª ª ª ß
ª A_CM_SERV_REQ ª ª ª ß
ª—————->ª MAP_PROCESS_ACC_REQª ª ß
ª (note 1) ª——————->… ª ß
ª ª (note 2) ª ª ß
ª ª ª ª ß
ª A_ERASE_SS ª MAP_ERASE_SS ª ª ß
ª—————->ª——————->ª MAP_ERASE_SS ª ß
ª ª ª—————->ª ß
ª ª ª ª ß
ª ª MAP_ERASE_SS ack ªMAP_ERASE_SS ack ª ß
ª A_ERASE_SS ack ª<——————-ª<—————-ª ß
ª<—————-ª ªMAP_INS_SUBS_DATAª ß
ª ª ª<—————-ª ß
ª ª ª (note 3) ª ß

NOTE 1: For details of the procedure on the radio path, see GSM 04.08, 04.10, 04.8x and 04.9x. 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 on the Process Access Request procedure, please refer to clause 25 in the present document.

NOTE 3: Services printed in italics are optional.

Figure 22.3.1/1: Interfaces and services for supplementary service erasure

22.3.2 Procedures in the MSC

The MSC procedures for erasure are identical to those specified for registration in subclause 22.2.2. The text and diagrams in subclause 22.2.2 apply with all references to registration changed to erasure.

22.3.3 Procedures in the VLR

The VLR procedures for erasure are identical to those specified for registration in subclause 22.2.3. The text and diagrams in subclause 22.2.3 apply with all references to registration changed to erasure.

22.3.4 Procedures in the HLR

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