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GSM 09.02 - Version 5.3.0 - Digital cellular telecommunications - ETSI

GSM 09.02 - Version 5.3.0 - Digital cellular telecommunications - ETSI

GSM 09.02 - Version 5.3.0 - Digital cellular telecommunications - ETSI

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Page 620<br />

<strong>GSM</strong> <strong>09.02</strong> <strong>Version</strong> <strong>5.3.0</strong>: August 1996<br />

When the MAP_FORWARD_NEW_TMSI indication is received in the MSC, the TMSI Reallocation<br />

Command is sent to the MS, and the MSC waits for an acknowledgement from the MS. In case a positive<br />

acknowledgement is received, the MSC sends an empty MAP_FORWARD_NEW_TMSI response primitive<br />

to the VLR and terminates successfully. Else, the dialogue is terminated locally (MAP_CLOSE_Req with<br />

Release method Prearranged End) without any further action.<br />

If the MSC receives an A_SETUP request while it is waiting for the TMSI acknowledgement from the MS,<br />

the A_SETUP is saved for handling by the procedure which invoked the macro<br />

Process_Access_Request_MSC after the macro has terminated.<br />

If the dialogue is aborted by the VLR while waiting for the TMSI acknowledgement from the MS, the MSC<br />

regards the access request to be failed and terminates with unsuccessful outcome, after sending a release<br />

request towards the MS (see TS <strong>GSM</strong> 09.10).

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