Zultys MX250, Hardware Manual

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MX250 Hardware Manual
3.4.3.2 PCM RJ45 Pin Assignments
Each circuit on the PCM card terminates on an RJ45 connector. Figure 3-8 shows the pin
placement of each pin of the PCM. Both circuits have the same pin assignment. Figure 3-9 shows
the function assignment of each pin.
Figure 3-10 displays the connection of PCM circuits to the network or other equipment. Use a
straight cable to connect the MX250 to the network jack. Use a crossover cable to connect the
MX250 to an existing terminal system (such as an existing PBX). Figure 3-10 also displays MX250
pinouts and pinouts typically used for terminal and network equipment. Consult the
documentation for specific devices to confirm the pin assignment.
Figure 3-8 Pin Assignment of PCM Circuits on PCM Card
Pin Signal Name Circuit Source
3 NC AA common
6 NC AA common
7 NC AA common
8 NC AA common
1 Received Data, ring BAa Facility
2 Received Data, tip BAb Facility
4 Transmitted Data, ring BBa MX250
5 Transmitted Data, tip BBb MX250
Figure 3-9 Pin Description of a PCM Circuit
Figure 3-10 Wiring the PCM Circuits to the Network or Other Equipment