Specifications

Page 20–6
FOCUS System Manual
2. Unlock the FOCUS chassis.
If the chassis is locked, execute the “Unlock
Configuration” command on the FCS Setup
menu or click on the “Unlock FOCUS
Chassis” speed button .
This puts the chassis into a configurable state,
allowing you to properly install the
Addressable Two-Wire Voice Module and
interface.
3. Insert the Addressable Two-Wire Voice
Module into the FOCUS chassis.
If you are connecting a telephone to this
chassis, make sure you install a PBW module.
If you are connecting a PBX to this chassis,
make sure you install a PBT module.
Carefully insert the Addressable Two-Wire
Voice Module into the top and bottom grooves
of any open slot on the FOCUS chassis. Slide
it all the way in until it is well seated in the
slot. Lock it into place using the black
inject/eject lever on the front of the module.
When you first insert the module, the red/
green status LED is red. If the module is func-
tional, the status LED turns green within 20
seconds. If the module is non-functional, the
status LED stays red, even after 20 seconds
have elapsed.
4. Connect the telephone or PBX to the
module’s rear interface module.
The PBW/PBT rear interface module has both
a compression-type terminal block and an
RJ-9 jack, as shown in Figure 20-3. You will
use only the channel A connections on the
terminal block.
The MVI interface has one AMP “Champ” 50
as shown in Figure 20-4. It may be used to
interface up to three voice modules to termi-
nation points like jack fields, terminal blocks
or RJ-21X terminations. Please see Table 20-
1 for circuit, signal and pin assignments. It has
six jumpers on the inside top of the board.
These jumpers are used for setting the
signaling type for each of the six circuits. As
seen in Figure 20-5, if the jumper is in the top
position, that sets the circuit for Type I
signaling and in the bottom position sets the
circuit for Type IV/V signaling.
If the telephone or PBX you are connecting
has an RJ-9 connector, simply plug the
connector into the RJ-9 jack on the rear
interface module.
If the telephone or PBX has a two-wire
telephone line, you can connect these wires
directly to the channel A “R” (ring) and “T”
(tip) connectors, according to the position
assignments in Figure 20-3. To connect the
Figure 20–3.
PBW/PBT Interface Module.
PBW/PBT
P1
1
R
T
R
T
CHNL A
CHNL B
J3
A
J2 B
12345678
“TIP”
Red
“RING”
Green