
Line Keys and Programmable Keys
Flash Key
You can set a programmable key to generate a flash event when it is pressed on the 53i. You do this by setting the programmable key to "flash". The IP phone generates flash events only when a call is connected and there is an active RTP stream (for example, when the call is not on hold).
Configuring a Flash Key
Aastra Web UI
1. Click on Operation->Programmable Keys.
2.Select a "Key 3" through "Key 6".
3.In the "Hard Key" field, select flash.
4.Click to save your changes.
52Model 53i IP Phone User Guide