Справочник Пользователя для AASTRA 53i
![AASTRA](https://files.manualsbrain.com/attachments/b2f0cf80cb8afb35e4683acb8b17bf23f025ceb5/common/fit/150/50/b2d3a475ad529d43559bee574090d739264135619bc582db8eeb2580972a/brand_logo.jpeg)
Operational Features
5-134
41-001160-00, Release 2.1, Rev 04
IP Phone Administrator Guide
Operational IP Phone 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 "ACD Subscription Period" field.
3
Click
to save your changes.