Aastra Telecom 57i CT IP Phone - Manual (Page 61)

Model 57i CT IP Phone User Guide 53
Softkeys
Valid values are 1 through 9.
6. 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.
7. Click to save your changes.
8. Click on Operation->Reset.
9. In the "Restart Phone" field click to restart the IP phone.