Installation
Using Digital Junction Box to Connect a Single Deskset
MC3000 Digital Deskset Operator and Installation Manual
2-3
(6880309L15-A)
Using Digital Junction Box to Connect a Single Deskset
For a single connection, the digital radio and Digital Junction Box must be within 50 feet of
each other. Figure 2-1 shows a Digital Junction Box connected to a digital radio. The con-
nection to the radio is made using a radio interface cable (provided with the Digital Junc-
tion Box). The connections to the operator desksets and consoles are made over RS-485
links, using RJ45 connectors to connect to the Digital Junction Box. The operator consoles
and desksets can be located up to 5000 feet from the Digital Junction Box. If the deskset
is connected directly to the radio, the maximum separation is 50 feet. A deskset cannot be
connected directly to an LTR radio.
Figure 2-1: Single Digital Deskset with Digital Junction Box Configuration
Figure 2-2: Single Digital Deskset direct to Radio (except LTR) Installation
MC3000 deskset
RJ-45
RS-485
(Category 5 twisted pair)
RJ-45
Master
Digital
Junction
Box
Digital radio
5000’
50’
MC3000 deskset
RS-485
(Category 5 twisted pair)
RJ-45
Digital radio
(except LTR)
50’
