Multi-Line Connections (Pbx; If You Are Installing The Mfc To Work With A Pbx; Custom Features On Your Phone Line - Brother MFC MFC-5440CN User Manual

Multi-line connections (PBX)

Most offices use a central telephone system. While it is often
relatively simple to connect the MFC to a key system or a PBX
(Private Branch Exchange), we suggest that you contact the
company that installed your telephone system and ask them to
connect the MFC for you. It is advisable to have a separate line for
the MFC.
If the MFC is to be connected to a multi-line system, ask your installer
to connect the unit to the last line on the system. This prevents the
unit from being activated each time a telephone call is received.

If you are installing the MFC to work with a PBX

1
It is not guaranteed that the unit will operate properly under all
circumstances with a PBX. Any cases of difficulty should be
reported first to the company that handles your PBX.
2
If all incoming calls will be answered by a switchboard operator,
it is recommended that the Receive Mode be set to Manual . All
incoming calls should initially be regarded as telephone calls.

Custom features on your phone line

If you have Voice Mail, Call Waiting, Call Waiting/Caller ID,
RingMaster, an answering service, an alarm system or other custom
feature on one phone line it may create a problem with the operation
of your MFC. (See Custom features on a single line. on page 11-12.)
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