Mitel MiVoice 6940 User Manual page 46

Multi-key function
Releasing a correspondent:
Leave
Off-hook
39
To change from one correspondent to the other, just press
successively the blinking programmed key.
To release one of the correspondents (the one with whom you are
talking):
• Press End to release the ongoing call then the line key of the
correspondent with whom you wish to resume the call.