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XG125 SIP voice without audio

Hello people. 

I'm new to using fw sophos.  But I have a question I can not find the solution. 

Today in the company on FW XG 125 I have LAN (192.168.11.0) on port 1 / Wan1 on port 2 / Wan2 on port 3 and voice LAN on port4 (192.168.20.10). 

When implemented inherited the mikrotik access and NAT settings, created the same rules in sophos and when rerun binding test, I receive ok.  but when making calls, the calls were muted.  Then disable the sip module.  and outgoing calls normalized and incoming calls unchanged, everything normal. 

And today I went to do the VPN settings, created the group within authentication / group and then added my DC server to relay the authentications and imported other groups that were not in AD.  Created the firewall rule, and the group that I had created at the beginning decided to delete, with this the internet was blocked for users and as a partial solution I created a temp rule releasing everything.  By disabling the VPN rule, the internet normalized, excluding the temporary firewall rule making the release.  After this occurrence the incoming binding are muted.  There are no app control rules, the firewall rules have traffic, and when I disable the PBX SIP GW interface it fails.  This I deduce that the firewall is not blocking the connections, when I enable interface SIP GW the same failure occurs.  In Log Viewer there is no block coming from the operator's ip and the output is by the same inbound link.  Does anyone have any ideas what may be happening?

 

Thanks



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Parents
  • Hi  

    VOIP issue:

    While enabling the SIP inspection, SIP headers maybe get altered due to which RTP packets used in VOIP calls are not redirected to the correct destination.

    Usually, SIP inspection is useful when you are doing a port forward for the SIP protocol. 

    Is there any specific requirement to keep the SIP inspection enabled while all ports.  are allowed for communication? In that case, we need to look at pcap files.

    I would recommend opening a service request with technical support for further investigation.

Reply
  • Hi  

    VOIP issue:

    While enabling the SIP inspection, SIP headers maybe get altered due to which RTP packets used in VOIP calls are not redirected to the correct destination.

    Usually, SIP inspection is useful when you are doing a port forward for the SIP protocol. 

    Is there any specific requirement to keep the SIP inspection enabled while all ports.  are allowed for communication? In that case, we need to look at pcap files.

    I would recommend opening a service request with technical support for further investigation.

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