Knowing your phone's IP address will help you access the the device web interface (GUI), and may be helpful in determining a static IP address to set on it.

To locate your Aastra phone's IP address

  1. Press Options.
  2. Select Phones Status.
  3. Select IP & MAC Address.

The resulting screen will show your phone's IP, in addition to the device MAC address. (Unlike other phone models, however, it will not provide subnet or gateway information.)