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Integrator's Reference Manual for Polycom HDX Systems
Serial Cables
Straight-Through Serial Cable
This cable connects a Polycom HDX system to a serial device. It has a DB-9 connector on each end. The
maximum approved length for this cable is 100 ft (30 m).
Length
25 ft (7.6 m)
Polycom, Inc.
Polycom does not recommend using this straight-through serial cable for RS-232
communication from a computer, Crestron system, or AMX device. Instead, for
RS-232 communication, Polycom recommends using a cross-over cable with pin 2
wired to pin 3, pin 3 wired to pin 2, and pin 5 wired to pin 5. The other pins are not
used.
If you choose to use this straight-through serial cable for RS-232 communication
from a computer or Crestron system, the
required. However, the null modem adapter does not work for RS-232
communication from AMX devices and causes problems if you try to use it.
Part Number
2457-09172-001
Null Modem Adapter
RoHS Compliant
—
Cables
on page 102 is
100
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