Polycom VIEWSTATION EX, Руководство пользователя

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Chapter 8 - Troubleshooting
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Video
Symptom Cause Solution
Picture is blank on the
main monitor. The system goes to “sleep” mode
after 3 minutes of inactivity. Pick up the remote control to wake
up the system.
Same picture is seen on
the first and second
monitor. Only one monitor is enabled. Enable the system for two monitors
on the Monitor Setup screen.
The monitors are connected to the
same output. The monitor has a
composite as well as an S-Video
output. Connect Monitor 2 to the Monitor 2
connection on the rear panel of the
system.
Picture freezes
frequently during a call. The network line transmission
errors or IP LAN traffic is too high.
Check the error count under the
Diagnostics screen or try a lower
speed IP call. Check your system using the Near
End Loop test under the
Diagnostics screen. If the picture
does not freeze, tell the far site to
perform the same test. If the picture
freezes, there are line errors on your
ISDN lines.
You can also test this by placing a
video call to an ISDN loopback
number provided by your service
provider.
Picture is slow or jerky. Only one 64 Kbps channel is
connecting in your call. Check the ISDN number of the far
site. Ask the far site to call your site.
Lots of motion in the picture you
are receiving. A background with less motion
provides a better, smoother video
picture.