Aastra 6757I User Manual page 75

This means that when all line/call appearances are in use, 1 call is connected while the rest are on
hold. No further outgoing or incoming calls can be made until one of the line/call appearances
becomes available.
In active states, such as ringing, conference, connected, etc., all softkeys disappear except softkeys
that have been set up as line/call appearances, and any context dependent softkeys required for the
active state, such as the Drop softkey in the connected state. Typically, context dependent softkeys
appear in the top left position and all line/call appearance softkeys appear in the remaining
positions.
You use the Aastra Web UI to set a softkey as a line.
Model 6757i IP Phone User Guide
Note:
In some situations, such as during a conference call, the line/call appearance
softkeys may overwrite some of the context dependent softkeys. In this case, instead
of the Previous and Next softkeys, up or down icons,
5 and 2
display. By using the
functionality as the Previous and Next softkeys.
5 and 2
navigation keys, you can access the same
appear on the
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