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Integrator's Reference Manual for Polycom HDX Systems
Polycom HDX Microphone Array Crossover Cable
For more information about supported microphone configurations, refer to the Administrator's Guide for
Polycom HDX Systems.
This cable connects any two Polycom HDX microphone arrays that use RJ-45 sockets.
Length
25 ft (7.6 m)
50 ft (15 m)
100 ft (30 m)
P1
The following figure describes features of the 25- and 50-foot cable.
P1
TX(+)
1
TWISTED PAIR
TX(-)
2
DRAIN
3
4
RX(+)
5
TWISTED PAIR
RX(-)
6
GND
7
48V
8
WIRING DIAGRAM
The following figure describes features of the 100-foot cable.
Polycom, Inc.
Part Number
2457-24009-001
2457-24008-001
2457-63015-001
25 / 50 / 100 FEET
When connecting two Polycom HDX microphone array host devices, a crossover
cable is required. To build a custom crossover cable for this purpose, you should
use shielded CAT5 or better cable. Each end of the custom cable should have a
shielded RJ-45 plug connector that connects to a Polycom HDX microphone array
host device. The maximum supported cable length is 100 feet.
Due to differing use of the twisted pairs within the cable, the pinout for this custom
CAT5 crossover cable is not the same as the pinout that is used for standard
Ethernet cables. Do not use standard Ethernet cables. Instead, for best cable
performance, refer to the following pinout information to create this custom CAT5
crossover cable.
P2
5
TWISTED PAIR
6
3
4
1
TWISTED PAIR
2
7
8
RoHS Compliant
Yes
Yes
Yes
Cables
P2
1
8
85
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