Aastra Telecom IP Phone - Manual (Page 179)

Model 57i IP Phone User Guide 171
Additional Features
Using the Goodbye Key to Cancel Incoming Calls Feature
IP Phone UI
IF THEN
"Goodbye Key Cancels Incoming Call"
is enabled AND a second call comes in
while you are on an active call, press the Goodbye key to reject the
second incoming call.
"Goodbye Key Cancels Incoming Call"
is disabled AND a second call comes in
while you are on an active call, press the Goodbye key to hang up on
the active call so you can answer the
second incoming call.
"Goodbye Key Cancels Incoming Call"
is disabled AND a second call comes in
while you are on an active call, press the "Ignore" softkey to ignore the
second incoming call and remain on the
active call
OR
press the "Answer" softkey to answer
the second incoming call.