Polycom realpresence group series Reference Guide

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 —

Polycom realpresence group series Specifications

General

Video Standards	H.264, H.263, H.264 High Profile
Audio Standards	G.711, G.728
Content Sharing	People+Content
Network	H.323, SIP
Security	AES encryption
Video Input	HDMI
Video Output	HDMI
Audio Input	HDMI
Audio Output	HDMI
Audio Features	Noise Reduction, Automatic Gain Control
Connectivity	Ethernet
Ports	Ethernet, HDMI
Compatibility	Microsoft Lync / Skype for Business, BlueJeans, Zoom