Brother FAX-920 Fax Machine User Manual


 
17
INSTALLATION
IMPORTANT:
The PC interface is a SELV (Safety Extra Low Voltage) port
as defined in EN41003. It must only be connected with a
SELV circuit; only the MFL Pro for Fax cable kit (available
in an option pack), satisfies this requirement.
Multi-Line Connections (PABXs)
Most offices use a central telephone system. While it is often relatively
simple to connect the machine to a key system or a PABX (Private
Automatic 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. You can
then leave the machine in FAX ONLY Mode to receive faxes any time of
day or night.
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 PABX:
1
It is not guaranteed that the unit will operate correctly under all
circumstances with a PABX. Any cases of difficulty should be
reported first to the company that handles your PABX.
2
If all incoming calls will be answered by a switchboard operator, it is
recommended that the Answer Mode be set to MANUAL. All
incoming calls should initially be regarded as telephone calls.
3
The unit may be used with either pulse or tone dialling telephone
service.
Ringer Equivalence Number (REN)
This equipment has a REN value of 1. A BT line has a “bell ringing”
capacity, or REN, of 4. This means that adding downstream-connected
extension telephones and/or extension bells to a total REN of greater
than 4 may cause a reduction in the bell volume. In extreme cases, it
may cause the auto-answer facility of the machine to fail.
Therefore, up to three additional extension telephones (each assuming a
REN of 1), may be connected downstream of your machine. For an
explanation of “downstream connection, read “Using extension
telephones” which follows.
Unless otherwise marked, a telephone provided by BT may be assumed
to have a REN value of 1.