Solved: Re: Unable to call - Unknown

ThibaultSanchez7505 · ‎09-16-2019

Hello,

A VC system receive a call during a few seconds without ever accept it and the call is disconnected (see the file attached).

In the opposite, this specific system can call anyone.

So, we think the signalling flows aren't opened in only one direction.

But someone has ever had this problem before?

Kind regards.

Wayne DeNardi · ‎09-16-2019

As you have written, it very much sounds like you have the firewalls configured to allow the traffic to flow properly in one direction, but they aren't necessarily configured in the other direction (or on the other end).

Wayne

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View solution in original post

Wayne DeNardi · ‎09-16-2019

As you have written, it very much sounds like you have the firewalls configured to allow the traffic to flow properly in one direction, but they aren't necessarily configured in the other direction (or on the other end).

Wayne

Please remember to mark helpful responses and to set your question as answered if appropriate.

ThibaultSanchez7505 · ‎10-03-2019

Hello,

Exactly, the H323 static (5555 - 6555) and also dynamic port allocation range were blocked.

So we have opened this specific port range in order to fix this issue.

Kind regards.