Cables
Polycom, Inc. 105
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 is 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.
Length Part Number RoHS Compliant
25 ft (7.6 m) 2457-09172-001 —
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