Aastra 6757I User Manual page 77

6. (Bottom Softkeys) In the state fields, check (enable) or uncheck (disable) the states you want
to apply to this softkey.
Expansion Module Keys
7. Select from "Key 1" through "Key 36" (M670i)
or
Select from "Key 1" through "Key 60" (M675i)
8. In the "Type" field, select Line to apply to the key.
9. (M675i) In the "Label" field, enter a label to apply to this key.
10. In the "Line" field, select a line to apply to this key.
Valid values are 5 through 9.
11. Click Save Settings.
Model 6757i IP Phone User Guide 71