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
  • I have to explain it a little differently again.

    From the LAN ( I can get into the RED network ( without any problems.

    My problem is that I cannot get into the RED network from the VPN network (

    With a ping to, for example, "Response from Target network cannot be reached."

    However, I do not know this IP.

    I have set up a firewall rule VPN - RED / RED - VPN.

    However, this has not yet resulted in success.

    Can you help me here?

    Best wishes