Straight-Through Cable - Polycom RealPresence Group Series Reference Manual

Straight-Through Cable

This cable connects a RealPresence Group Series 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).
Recommendations for Use
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 Null Modem Adapter
AMX devices and causes problems if you try to use it.
Length
25 ft (7.6 m)
Polycom, Inc.
is required. However, the null modem adapter does not work for RS-232 communication from
Part Number
2457-09172-001
RoHS Compliant
—
Cables
105