Intercom Switch; Intercom Interface - Telex RadioCom BTR-700 Operating Instructions Manual

Intercom Switch

The Radiocom™ wireless system can be interfaced to RTS
TW, Audiocom® (Telex), Clearcom®, RTS matrix and other
intercom (I/C) systems. Set the Intercom switch on the rear of
the unit to the appropriate system and connect the system to
the base station. The intercom channel on the rear of the base
station has loop-thru male and female XLR connections for
two-wire systems and a RJ-11 type jack for four-wire systems.
This switch only affects the two-wire intercom systems. The
functions of the I/C XLRs change depending on the intercom
selected. Please see Section 11 for pinout information of the
different two-wire intercom systems.

Intercom Interface

Telex (Audiocom®) and Clearcom® intercom systems require
one cable for intercom. This interfacing is done through the
I/C 3 pin XLR connectors on the rear of the unit.
RTS TW intercoms also only need to connect one 3 pin cable
to one of the two intercom XLR connectors. Two channels of
audio are carried on one cable for RTS. RTS channel 1 is
placed on the intercom normally. Switch the rear panel I/C
switch to Clearcom® to interface only to RTS audio channel
2. Once again, leave it in RTS to interface to only RTS audio
Channel 1.
Four wire intercom systems require only one cable for the in-
tercom to interface four wire intercom to the base station. This
interfacing is done through the I/C RJ-11 type jacks on the
rear of the unit. See Figure 16 for the pinout of the RJ-11
jacks.
PIN 6 5 4 3 2 1
NC
AUDIO IN -
AUDIO OUT +
AUDIO OUT -
Figure 16
RJ-11 Type/ Four-wire Pinout
4-6
NC
AUDIO IN +