MULTISERVER 500
64
There are two connectors located on the back panel
of the FXO: J2 and TB1 (see Figure B-2). J2,
labeled FXO, is an RJ-11 modular connector used in
most FXO-type applications. TB1 is a 4-pin
terminal block used to connect to a punch block.
Both J2 and TB1 are shielded by a protective cover.
Connectors J2 and TB1 terminate the Tip (T)
and Ring (R) leads in parallel, so that pins 2 and 3
of J2 are connected, respectively, to pins 1 and 2 of
TB1 (see Figure B-3).
In most applications, use a modular cable
(included) to connect the voice/fax channel to
telephone equipment (see Figure B-4). Connect
one end of the cable to the FXO connector on the
voice/fax interface module. Connect the other end
to your telephone equipment.
J2 (FXO)
1
2
3
4
1
2
3
4
TB1
T
R
SG
CGND (Chassis Ground)
Figure B-3. Wiring of the Connectors on the Back Panel.
4
TB1
J2
FXO
3
2
1
SG —
R
T
SG —
R
T
Legend:
T
R
—
SG
=
=
=
=
Tip
Ring
No Connection
Signal Ground
Figure B-2. Back Panel of the FXO Analog Interface Module.