Polycom VSX Series User Manual

Administrator’s Guide for the VSX Series
7 - 24
No audio at your site.
(Continued)
ISDN voice algorithm is
incorrect.
Go to System > Admin Settings > Network > ISDN.
Change the ISDN Voice Algorithm selection (aLaw
or uLaw).
A single monitor VGA
configuration does not have
an external audio system.
Check the system’s audio connections to the
external audio system.
The monitor’s audio inputs
are not connected properly.
Check audio output using the Speaker Test screen
under Diagnostics > Audio. You should hear a 400
Hz tone.
Ask someone at the far site to speak into the
microphone, and check the Far Site Audio meter on
the Audio Meter screen under Diagnostics > Audio
to determine whether your system is receiving audio.
The system’s audio outputs
are not connected properly.
Check the system’s audio connections to the
monitor, or to the external audio system if one is
connected.
Verify that the system is connected to the correct
audio connectors on the monitor.
Symptom Problem Corrective action

Polycom VSX Series Specifications

General

Video Standards	H.264, H.263++
Audio Standards	G.711, G.722, G.722.1, G.728
Network Protocols	H.323, SIP
Video Inputs	S-Video, Composite video
Video Outputs	Composite, S-Video, DVI, HDMI
Audio Inputs	Line In
Audio Outputs	Line Out
Data Collaboration	H.239
Network Interfaces	Ethernet
Power Consumption	Varies depending on the specific model and configuration.