AASTRA 4220 Lite for BusinessPhone User Guide EN - Manual (Page 32)

During Calls
BusinessPhone – Dialog 4220 Lite / Dialog 3210 32
Transfer to a busy extension
You can even transfer calls to busy extensions. The other party will
hear a muted signal (Camp-on), and the call will be extended, as
soon as the ongoing call is terminated (if Camp-on is allowed).
Callback
You are called back, if you have transferred an external call and the
other extension has not answered the call within a certain time.
Your telephone will ring again.
Call Waiting
If you hear the Call Waiting tone during an ongoing conversation,
another person is trying to contact you.
To terminate the ongoing call and answer the waiting
call
d
Replace the handset to finish the ongoing call.
The waiting call is signalled on your phone. u
Lift the handset to answer the new call.