Connecting To A Digital Junction Box - Motorola MC3000 Operating And Installation Manual

Connecting to a Digital Junction Box

The deskset is connected via an 8-wire CAT-5 cable (4 wires for audio and 4 wires for
data) to the Digital Junction Box which is connected to the radio. (See Figure 2-9.)
Desksets are shipped with the line terminations active. When parallel desksets are con-
nected, only the farthest deskset should be terminated.
Connect the cable from the Digital Junction Box to the 8-pin RJ45 connector labeled
"Audio/Data" on the back left hand side of the bottom housing. The pins are numbered in
ascending order from top to bottom and left to right.
Figure 2-8: RJ45 Connectors
4 5 6 7
1 2 3
To Digital Junction Box
Console/Deskset Port
Figure 2-9: MC3000 Deskset to Digital Junction Box Cable
MC3000 Digital Deskset Operator and Installation Manual
(6880309L15-A)
FRONT
VIEW
8 7 6 5 4 3 2 1
RJ45 8-WIRE
Table 2-4: Audio and Data to Radio RJ45 Pinout
Pin # Function
1 Ground
2 Busy
3 Receive +
4 Transmit +
5 Transmit -
6 Receive -
7 Data -
8 Data +
8
Connecting to a Digital Junction Box
BACK
VIEW
Installation
1 2 3
4 5 6 7
8
To MC3000
Deskset
2-9