Polycom 1 - Manual (Page 141)

Troubleshooting
12 - 11
Graphics are displayed on
Monitor 1 at all sites even if
a different monitor has
been specified for content. At least one site does not
have dual-stream,
People+Content, or H.239
capability.
This can occur in calls to
older systems that do not
support this feature. ViewStation™ EX/FX owners can upgrade to the
latest version of software.
Bridges, which support this
feature, must have the
conference configured for
this feature. Configure the bridge for this feature.
Edges of picture are cut off
when viewing graphics. Graphics from the far site
are displayed on an NTSC
monitor. Use a VGA monitor to display graphics.
Call participants cannot see
or hear what is being
played on the VCR or DVD. The VCR or DVD is not
selected. Select the VCR (Camera 3):
Press
Camera, then press 3.
The VCR or DVD is not set
up correctly. Check that the VCR or DVD is connected according
to the instructions in the section
Connecting
VCR/DVDs on page 5-1 .
Refer to the manufacturer’s instructions to set up the
VCR or DVD correctly.
Picture freezes frequently
or becomes blocky during
an IP call. There is too much traffic on
the LAN. Check the error
count on the Call Statistics
screen. Go to System > Admin Settings > Network > IP >
Quality of Service and enable dynamic bandwidth.
The network is
experiencing packet loss. Go to System > Admin Settings > Network > IP >
Quality of Service and specify a smaller value for
Maximum Transmission Unit Size.
Picture freezes frequently
during an ISDN call. Too many network line
transmission errors. Check
the error count on the
Diagnostics > Call
Statistics screen to verify
this. Try the call again.
Network interface cable or
cables may be bad. Replace the cable or cables.
Symptom Problem Corrective action