AASTRA 4187 Plus for BusinessPhone User Guide EN - Manual (Page 23)

23 BusinessPhone – Dialog 4187 Plus
Outgoing Calls
Busy Extension
You call an extension and receive busy tone.
Camp-on
You can notify a busy extension of your call by sending a call
waiting tone (if this function is allowed). 4
Press to camp-on.
Keep the handset off hook. When the called extension replaces the
handset, it will be called automatically.
Notes:
If you receive the busy tone again, the desired extension
does not allow Camp-on.
The number for Camp-on may differ from country to
country, see table “ Alternative Programming for Camp-on,
Automatic Callback, Call Pick-up, Intrusion ” on page 69.
Intrusion
You can intrude on an ongoing call on a busy extension (if this
function is allowed). 8
Press to intrude.
Intrusion tone is heard and a three-party call is established. When
the called extension replaces the handset and you keep off hook,
the called extension will be recalled automatically.
Notes:
If you still hear the busy tone, your extension does not have
the authority to intrude or the desired extension is protected
against Intrusion.
The number for Intrusion may differ from country to country,
see table “ Alternative Programming for Camp-on,
Automatic Callback, Call Pick-up, Intrusion ” on page 69.
Diverted Extension
See chapter “ Bypass Call Forwarding ” on page 40.