Aastra Telecom 55i IP Phone - Manual (Page 79)

Model 55i IP Phone User Guide 73
Softkeys and Programmable Keys
3. In the "Type" field, select Intercom.
4. In the "Label" field, enter a label to apply to this softkey.
5. If configuring a softkey on the Bottom Keys, in the state fields, check
(enable) or uncheck (disable) the states you want to apply to this softkey.
6. Click to save your changes.
7. Click on Operation->Reset.
8. In the "Restart Phone" field click to restart the IP phone.