Operational features – Aastra Telecom SIP 480I User Manual
Page 148
Operational Features
5-36
41-001129-00 Rev 09, Release 1.4.1
IP Phone Administrator Guide
Operational Features
Aastra Web UI
1
Click on Advanced Settings->Global SIP->Advanced SIP Settings.
2
Enter a value, in seconds, from 120 (2 min) to 3600 (1 hour) in the "BLF Subscription Period" field.
3
Click
to save your changes.
You must restart your IP phone for the changes to take affect.
4
Click on Operation->Reset.
5
In the "Restart Phone" field click
to restart the IP phone and apply the changes.
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