Specifications

Troubleshooting the SCOPIA Elite MCU | 71
RADVISION | Administrator Guide for SCOPIA Elite 5100 Series MCU Version 7.7
Resolving a Video Display Issue
Problem The video for a conference participant is not displayed in a conference view.
Possible Causes
• Interoperability issues: an incorrect video format used by an endpoint or incorrect logical
channel negotiation
• Issues related to a camera or cables
• The media ports are blocked on the firewall
Solution If the problem is caused by interoperability issues, perform the procedure in this section:
Procedure
Step 1 Make a point-to-point call without RADVISION products to verify that there are no issues related
to endpoints used in a conference. In case there are problems related to endpoints, use the
endpoint documentation to troubleshoot them.
Step 2 If the problem is not endpoint-related verify that perform verification depending on the kind of
endpoint used in the conference:
• For a SIP endpoint, verify that both the MCU and the endpoint are properly registered with
the SIP proxy.
• For an H.323 endpoint, verify that both the MCU and the endpoint are properly registered
with the ECS.
• For a 3G endpoint, verify that both the MCU and the endpoint are properly registered with
SIP proxy and/or the ECS.
Step 3 If registration is correct, collect logs and wireshark traces to RADVISION Customer Support.
Solution If the problem is caused by the camera-related or cable-related issues, verify that the camera is
connected properly.
Solution If the problem is caused by incorrect firewall configuration, open the necessary media ports on
the firewall. Refer to the Port Security Reference Guide for information about ports.