Polycom VSX Series Administrator's Manual page 183

Symptom
Picture freezes
frequently during an
ISDN call.
Picture is slow or jerky.
The system is not using
Pro-Motion video.
No picture in the PIP
window.
© Polycom, Inc.
Problem
Too many network line
transmission errors. Check
the error count on the
Diagnostics > Call
Statistics screen to verify
this.
Network interface cable or
cables may be bad.
The system is receiving
video that includes a large
amount of motion.
Too many network line
transmission errors. Check
the error count on the
Diagnostics > Call
Statistics screen to verify
this.
Only one 64 Kbps channel
is connecting in your call.
The call speed is lower
than the minimum speed
you have configured for
Pro-Motion video.
VSX 3000 and VSX 6000
systems send Pro-Motion
video for content only.
The lens cover is closed.
Chapter 7 - Diagnostics and General Troubleshooting
Corrective action
Try the call again.
Replace the cable or cables.
A background with less motion provides a better,
smoother video picture.
Try the call again.
Check the ISDN number of the far site. Ask the far site to
call your site.
Try the call again at a higher speed,
or
Go to System > Admin > Cameras >
Quality.
Change the Pro-Motion Video setting to the desired
minimum call speed.
This is normal.
Open the lens cover.
> > Video
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