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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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Page 672<br />

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

21.10.2 Macro Alert_Service_Centre_HLR<br />

The Alert_Service_Centre_HLR macro is initiated when the HLR notices that the Service Centre(s) shall be<br />

alerted. The macro starts process Alert_Service_Centre_HLR for every SC address in the MWD list.<br />

In the process Alert_Service_Centre_HLR the HLR sends MAP_ALERT_SERVICE_CENTRE request to<br />

the appropriate IWMSC. The MWD entry is deleted when the positive acknowledge is received from the<br />

IWMSC. The unsuccessful alert may be repeated. The MWD entry should be purged in the unsuccessful<br />

case, at least when a suitable time period has expired.<br />

The Alert_Service_Centre_HLR macro is shown in the figure 21.10/2 and the Alert_Service_Centre_HLR<br />

process is shown in the figure 21.10/3.

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