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CloudEC V600R019C00 Troubleshooting (Enterprise On-premises, Only Conference)

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Only Audio or Video Can Be Received

Only Audio or Video Can Be Received

Symptom

After a participant joins a conference, the participant cannot view the video or hear the voice of the remote endpoint.

Possible Causes

  • Ports are restricted. Only video or audio ports are enabled, or the data transmission direction is restricted.
  • Only audio or video channels are enabled.
  • Public and private network traversal plans are incorrect. The address to which the bit streams are sent is incorrect.

Troubleshooting Methods

  • Check the network and whether the ports of firewalls or network address translators are restricted.
  • Check the network and whether the H.323 gateways are enabled on firewalls or network address translators.
  • Check whether the public and private network traversal plans are correct.

Procedure

  1. Check whether the ports of the firewall and NAT device are configured according to the communication matrix.
  2. Check whether the H.323 gateways are enabled on firewalls or network address translators. If yes, disable the H.323 gateways.
  3. Log in to the MCU and run the following commands to enable media latching:

    [MCU8650C]rtp-config

    sip nat traversal{0: disable; 1:enable}[0]:1

  4. Capture packets on the MCU and endpoint. Check whether bit streams can be received and the bit stream sending and reception addresses that are negotiated in signaling are the addresses of the destination endpoint and MCU.
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Updated: 2019-08-07

Document ID: EDOC1100059100

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