User guide

Multi-Tech Systems, Inc. 118

Appendix A – Cable Pin-outs

Command Cable

RJ-45 Connector End-to-End Pin Info

1 2 3 4 5 6 7 8

RJ-45 connector plugs into Command Port of MultiVOIP.

DB-9 connector plugs into serial port of command PC (which runs MultiVOIP configuration software).

Ethernet Connector

The functions of the individual conductors of the MultiVOIP’s Ethernet port are shown on a pin-by-pin basis below.

RJ-45 Ethernet Connector Pin Circuit Signal Name

1 2 3 4 5 6 7 8

1 TD+ Data Transmit Positive

2 TD- Data Transmit Negative

3 RD+ Data Receive Positive

6 RD- Data Receive Negative

T1/E1 Connector

1 2 3 4 5 6 7 8

Transmit Pair (to line)

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Receive Pair (from line)

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