HS 2000 System Administrator’s Handbook
Chapter 5. Troubleshooting
Audio problems
105
Remote video intermittently freezes
(but local video is good)
This may occur during a session in which slides are being used, and is
caused by time lags while slides are either being retrieved from hard
disks, processed by the system, or transmitted.
This problem may also have these possible causes:
■
Incompatible data rates are being used.
■
Timing is not functioning correctly (problems with the
communications network clock source).
Check the remote and local sites’ data rate and clock source for
compatibility. Both sites should have the same clock source, which is
typically the network or the network interface device.
Audio problems
Audio not synchronized with video
If mouth movements are not in sync with the words coming from the
speaker, the “lip sync” is incorrect.
To adjust audio delays for all calls at a specific line rate, see “Configuring
audio delays” on page 37.
To adjust the audio delay for a call in progress, see “Setting audio delay
(adjusting lip sync)” on page 61.
Local site cannot hear remote site
Check the monitor’s volume control. You can use the monitor’s remote
control or the volume control on the front of the monitor to adjust the
