Aastra Telecom SIP 57I - Manual (Page 337)

Operational Features
41-001160-00, Release 2.1, Rev 04 5-127
Configuring Operational Features
Operational IP Phone Features
3 In the “Auto Available Timer” field, specify the length of time (in seconds) before the IP phone
state is automatically reset to “available.” Valid values are 0 to 120 seconds. Default is 60.
For example: 60
4 Click to save your changes.
Aastra Web UI