Problem between RED and XG - transmission of the voice


we have a problem with the transmission of the voice on our IP telephones between the XG and the SD-RED 20.

The connection can be established (it rings and you can pick up the receiver), but nothing can be heard.

The RED is located in the network

The XG in the network

The telephone system has the

Otherwise all traffic between the XG and the RED works.

Do any routes have to be set here in addition to the firewall roles?

Thank you very much and best regards ...


Edited TAGs
[edited by: emmosophos at 10:24 PM (GMT -7) on 29 Apr 2021]
Parents Reply
  • Hello Yash Kothari,

    I have logged into the console. SIP is activated.

    I don't understand that with the SNAt or I don't have instructions for the XG 18.5. Does SNAT have to be set?


    I ask the question a little differently. How do I get the RED network ( to reach the VPN network ( There does not seem to be any communication between these two networks. A ping is not possible, for example.

    Best wishes