Aastra Telecom Pro 160 - Manual (Page 139)

Configuring SoftKeys For Your IP Phone
41-001134-05, Rev 00, Rel. 1.1 3-31
Operating Your Aastra IP Phone Using the Web UI
Intercom Allows you to connect with a remote extension using the intercom.
Relay Allows an operator/user to monitor an external device (such as a
locked entrance door), and use a softkey to change the status of the
device (unlock the door) when an alarm is triggered.
Softkey Type Function