On the thresholed of the H.245 Socket error.

Our client has a SX20 that is frequently (randomly) disconnected from MCU5320 by Socket H.245 error.

I understand that this happens because the MCU could not benefit from the Round Trip Delay response the SX20, as a response to Round Trip Delay request MCU sent every 30 seconds of SX20 MCU.

So, there must be a problem with the network (firewall or unstable network etc.) between them.

But I do not know "how long the MCU is waiting for the response.

And "how many times the MCU support no answers?

I want to know when the MCU assesses the situation as "H.245 socket error.

Kind regards

Kotaro

Hi Kotaro,

According to the following link

http://www.Cisco.com/c/en/us/TD/docs/Telepresence/infrastructure/article...

Under what conditions a Cisco TelePresence MCU will cut a session IP?

Except when a participant chooses to unplug, the MCU will be only an end point of the Conference, when breaks TCP communication between two devices. This could be linked to the network or the endpoint, for example, when an end point connected to a conference is suddenly turned off, remove the network cable or the network fails between the endpoint and the MCU.

The MCU describes interrupt a call, due to network issues, as an error of H.245 network connection.

The time between the beginning of the problem and the MCU, removing the end point of the Conference will be about 75 seconds.

The MCU will never end the IP connection, in which case there is no problem with the TCP connection between the endpoint and the MCU, but for some reason any endpoint constantly send all packets UDP/RTP/RTCP etc. to the MCU.

HTH

Manish

Tags: Cisco Support

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