Telex RTS OMS OMNEO Main Station Advanced Digital Partyline Intercom Base (5-Pin Female) - Manual (Page 23)

OMS OMNEO Main Station Cables and cable requirements | en 23
Bosch Security Systems, LLC Technical Manual 01-2021 | 03 | F.01U.380.820
7.2 TIF and legacy keypanel cable overview
Each OMS system has unique requirements for cables, so it is not practical to apply these with
the unit. Most of these cables need to be custom built.
Bosch recommends use of 22AWG, stranded, twisted pair cable for the connections. For most
applications, unshielded cable is adequate. Shielded cable is only required when some
condition in the environment is inducing noise into the intercom system. For legacy keypanels
and the TIF, the cables should have three (3) twisted pairs. To connect 4-wire audio devices,
you need two (2) twisted pair cables.
For additional pinouts, see
Connector pinouts, page 19.
1
2
3
4
5
6
7
8
1
2
3
4
5
6
Pair 3
Pair 2
Pair 1
Pair 1
Pair 2
Pair 3
OMS panel port
(AIO connector)
RJ12 cable
Pin Description Pin
1 RS485 Data +
1
2 RS485 Data -
3 Audio from Matrix + 2
4 Audio to Matrix + 3
5 Audio to Matrix + 4
6 Audio from Matrix - 5
7 RS485 Data +
6
8 RS485 Data -
Tab. 7.13: OMS panel port (AIO Connector) to RJ12 intercom cable
Refer to
– Connector pinouts, page 19
7.3 RJ45 Ethernet connectors
Each RJ45 Ethernet connector has two LEDs: