
22 Chapter 1 Installing the Companion system
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RPI input connections
Feed the TCM input pairs from the Business Communications Manager distribution frame through
the top of the RPI and route them to the input connectors (IBIX1 to IBIX4).
The following figure shows how to route the input pairs. The maximum number of input pairs in
an RPI installation is 16.
Figure 8 Input connector pinout
The table below lists the pinout and signal references.
Table 3 Input wiring
Connector Pin Signal Output connector
IBIX1 1, 2 TCM 1 OBIX1
3, 4 TCM 2 OBIX2
5, 6 TCM 3 OBIX3
7, 8 TCM 4 OBIX4
IBIX2 1, 2 TCM 5 OBIX5
3, 4 TCM 6 OBIX6
5, 6 TCM 7 OBIX7
7, 8 TCM 8 OBIX8
IBIX3 1, 2 TCM 9 OBIX9
3, 4 TCM 10 OBIX10
5, 6 TCM 11 OBIX11
7, 8 TCM 12 OBIX12
IBIX4 1, 2 TCM 13 OBIX13
3, 4 TCM 14 OBIX14
5, 6 TCM 15 OBIX15
7, 8 TCM 16 OBIX16
IBIXn
Pin 3 Pin 1
Pin 2Pin 4Pin 6Pin 8
Pin 5Pin 7
Pin 7
IBIXn
Pin 5 Pin 3 Pin 1
Pin 8 Pin 6 Pin 4 Pin 2
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