Problem:
Client needs help with pin-out / wiring diagram for the Clink2 Crossover Cable to make their own version of p/n: (25 ft.) 2200-24009-001, (50 ft.) 2200-24008-001, (100 ft.) 2200-24010-001
Solution:
To build a custom Conference Link2 cable, use shielded CAT5e or better, and terminate both end connectors (P1 and P2) with standard 8P8C plugs (for example, RJ45) using the wiring connections shown below. The maximum length for this cable is 100 feet (30 m). Note that this cable provides a crossover connection between pins 1 and 2 and pins 5 and 6.
Note: HDX 6000, 7000, 8000 require the use of a Walta (M) to RJ45 (F) adapter (p/n: 2457-25646-001) on each end of this cable to connect from the HDX to the Polycom Microphone Pod.
Pair | Pins P1 | Pins P2 |
Pair 1 | 1, 2 | 5, 6 |
Pair 2 | 3, 4 | 3, 4 leave out the pin 4 wire |
Pair 3 | 5, 6 | 1, 2 |
Pair 4 | 7, 8 | 7, 8 (48 volts) |
The shield drain wire should tie to pin 3 | ||
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The pin 3 connection straight-thru is VERY important (one could say critical) as it sets the ground reference for the clocking signals passed on the other signal pairs (1,2 and 5,6). Without it, the cable/system stops working at lengths greater than about 25 feet.
On Polycom-supplied cables, that pin-3 is also tied to the shield of the RJ45 connector? but it?s almost impossible to do that with the drain wire and not cause an intermittent short.? So field terminations can be with the drain wire connected to the metal shield of the RJ45 connector and an unused wire pair (perhaps blue/white?)?connected to pin-3 straight thru.
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This post was written by ScanSource Communications Tech Support
You want to give your customers the best in voice and video conferencing equipment, and with ScanSource Communications, you?ll get it. With over 50 years of combined industry expertise, our Total Coverage offerings and knowledgebase can help you solve almost any communications question you can imagine. Plus, you will find articles from our savvy technical services team about key industry topics along with product support tips and tricks. You'll get it, because we get it.Contact Info: techsupport@scansourcecommunications.com 877-847-7000 x4095
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Source: http://blogs.scansource.com/polycom-hdx-series-microphone-clink2-cable-pin-out/
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