Cisco VCS error: temporary failure / new necessary connection

Hi all
I am writing this new post for support to the installation of the VCS (VCS Expressway + control) system.
In my case, I have 4 levels of firewalls (Juniper A - Checkpoint - Highway - Checkpoint - Juniper B - Control), where A is external genever that performs NAT.
At this point, I can make calls back and forth if I place the video-terminal external between Juniper and the control point (with a private address). If I try to put the video-terminal outside Juniper a NAT on this FW clearance and enable NAT application on the highway (with the public IP address), the call rings, but when the internal video-Terminal accepts the call, so that it that the call is connected (no audio), the appellant continues to sound as if no one answered.
Go to see the logs on the systems I have this message in venture capital:

Temporary failure / new necessary connection

go and see the details I have:

Call disconnected, Message sent, Grželj = ' temporary failure of Q.931 Cause, H.225 Cause: new necessary connection, more info: None.

A that someone already had this problem? Someone who can help me to locate where is the error?
Thank you very much!

Greetings
Federico

Federico,

for traffic between VCS - C and VCS-E, the following ALG could impact:

SIP

Q931

RAS

H245

In other words, all those which you have listed outside of RTSP. I would recommend that disable you SIP, Q931, RAS and H245 ALG, at least for the exchanged traffic between VCS - C and VCS-E.

Let us know how it goes

-Andreas

Tags: Cisco Support

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