Brother MFC-370MC - Manual (Page 18)

Two-Line Phone System
A Avo-line phone system is nothing more than two separate phone numbers on
the same wall outlet. The two phone numbers can be on separate jacks (RJl 1) or
combined into one jack (RJl4). Your fax machine must be plugged into an RJl 1
jack. RJll and RJ14 jacks maybe equal in size and appearance and both may
contain 4 wires (black, red, green, yellow). To test the type of jack, plug in a
two-line phone and see if it can access both lines. If it can, you must separate the
line for your fax machine.
Converting Telephone Wall Outlets
There are three ways to convert to an RJl 1 receptacle. The first two ways may
require assistance from the telephone company. You can change the wall outlets
from one RJ14 jack to tw^o RJl 1 jacks, Or, you can have an RJll wall outlet
installed and slave or jump one of the phone number’s to it.
The third way is the easiest: Buy a triplex adapter. You can plug a triplex adapter
into an RJl4 outlet, It separates the wires into two separate RJll jacks (Line 1,
Line 2) and a third RJl4 jack (Lines 1 and 2). Plug the fax machine into Line 2
of the triplex adapter.
RJ14
RJ11
RJ14
LI
Triplex Adapter
^IT
L2 L 1 + L 2
] c
Installing Fax Machine, External TWo-Line TAD,
and TWo-Line Telephone
When you are installing an external two-line telephone answering device (TAD)
and a two-line telephone, your fax machine must be isolated on one line at both
the wall jack and at the TAD. The most common connection is to put the fax
machine on Line 2. The back of the two-line TAD must have two telephone jacks:
one labeled LI or L1/L2, and the other labeled L2. You will need at least three
telephone line cords, the one that came with your fax machine and two for your
external two-line TAD. You will need a fourth line cord if you add a two-line