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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

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NULL<br />

Check_<br />

_Indication<br />

'MSRN<br />

Known?'<br />

Not Confirmed<br />

'Confirmed<br />

by HLR'<br />

Confirmed<br />

'IMSI<br />

Detached'<br />

'Roaming<br />

in LA<br />

Allowed'<br />

'LAI<br />

Known'<br />

OK<br />

Yes<br />

No<br />

Yes<br />

Yes<br />

MAP_PAGE_Req,<br />

MAP_DELIMITER<br />

WAIT_FOR_<br />

_PROCESS_ACCESS_<br />

_REQUEST<br />

No<br />

Yes<br />

No<br />

No<br />

MAP_SEND_INFO_FOR_<br />

INCOMING_CALL_Ind<br />

See Section<br />

21.2<br />

OK<br />

SEARCH_<br />

VLR<br />

Abort<br />

'Set UE =<br />

Unallocated<br />

Roaming<br />

Number'<br />

'Set UE =<br />

System<br />

Failure'<br />

2<br />

See Figure 18.3/6<br />

3<br />

Error<br />

Error<br />

Figure 18.3/5 (sheet 1 of 6): Process ICS_VLR<br />

Page 449<br />

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

1<br />

MAP_SEND_INFO_<br />

_FOR_INCOMING_<br />

_CALL_rsp,<br />

MAP_CLOSE_req

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