Polycom VSX 3000 Administrator's Manual page 165

Symptom
You hear the incoming call
ring when you have set
sound effects volume to 0.
Audio sounds raspy in
ISDN calls.
You can hear yourself on
your system.
There is audio feedback
when a VCR is connected.
Startup music plays
through the built-in speaker
but not through the monitor
speakers.
When music is played
during the call, it sounds
distorted at the other sites.
Problem
VSX 3000, VSX 3000A:
The internal ringer is
enabled.
ISDN voice algorithm is
incorrect.
The far site microphone is
too close to the system's
audio speaker. (Far-site
systems with separate
microphones only)
The far site audio volume
may be too loud.
The monitor or external
audio system is connected
to the VCR audio output.
A single VCR is connected
so that it can play or record,
no tape is present, and
VCR - Far and Near Audio
or VCR Audio Out Always
On is selected.
The audio system or
monitor speakers are not
properly connected.
The monitor's volume is
turned all the way down.
The music source is not
connected to the system.
The system's echo
cancellation and noise
suppression features may
interfere with music that the
microphone picks up.
The network is
experiencing packet loss.
Corrective action
On the Audio Settings screen, clear the Enable
Internal Ringer option.
Go to System > Admin Settings > Network > ISDN.
Change the ISDN Voice Algorithm selection (aLaw
or uLaw).
At the far site, make sure the microphone is placed
away from the system's audio speaker.
Turn down the audio volume at the far site.
Verify that all equipment is connected correctly
according to the manufacturer's instructions and the
setup sheet you received with the system.
Place a tape in the VCR.
Check audio connections and volume level on your
monitor.
Turn up the volume on the monitor.
Connect the music source to the system's audio
input.
Turn off the music.
Retry the call.
Troubleshooting
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