Brother MFC-9420CN - Manual (Page 40)

Setup
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3
Multi-line connections (PBX)
Most offices use a central telephone system.
While it is often relatively simple to connect
the machine 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 machine for you. It is advisable to have a
separate line for the machine.
If the machine 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 machine 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.
Connecting an external or
extension telephone
You can connect a separate telephone to
your machine as shown in the diagram below.
Connect the telephone line cord to the jack
labeled EXT. in the left of the machine.
When you are using an external phone, the
LCD shows Telephone.
Connecting an external
telephone answering device
(TAD)
Sequence
You may choose to connect an external
answering device. However, when you have
an external TAD on the same telephone line
as the machine, the TAD answers all calls
and the machine “listens” for fax calling
(CNG) tones. If it hears them, the machine
takes over the call and receives the fax. If it
does not hear CNG tones, the machine lets
the TAD continue playing your outgoing
message so your caller can leave you a voice
message.
Extension
Telephone
External
Telephone