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Model 57i IP Phone User Guide
Line Keys and Softkeys
5.
In the "
Line
" field, select the line you want to apply to this softkey.
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.