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
41-001160-03 Rev 00, Release 2.5
to save your changes.
Configuring Operational Features
Operational Features
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