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How to separate sip traffic

I have a question regarding sip traffic.

In our main office we have a firewall rule for outgoing calls. We have recently setup a remote office connected by a red 60. It has its own phone system but we are setting it up so you can dial extensions across the red tunnel. When we dial an extension it rings in the other end but you can hear anything once they pick up. I have noticed that once the call is answered it is trying to send that call out the firewall rule that I created for outgoing calls. What do I need to do in order to separate the 2 and make this work correctly?

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0 LuCar Toni over 4 years ago in reply to rfcat_vk

SIP Is somehow hard to deal with. The SIP Helper will open the connections in the firewall, but the association between those SIP Packets and the UDP Data packets is hard.

Likely the traffic looks completely different. See: https://docs.sophos.com/nsg/sophos-firewall/18.0/Help/en-us/webhelp/onlinehelp/nsg/sfos/troubleshooting/VoIPPhoneRingsNoAudio.html
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0 ITGuy22 over 4 years ago in reply to LuCar Toni

Yeah I think this is where I’m struggling.

I have all my rules set correctly for it to work with outgoing calls but not no audio when dial extensions down the tunnel. If I add the destination network into my rule then normal outgoing calls fail. I guess I just don’t know how to separate the routing for the 2 different rules since I’m pretty sure it’s going to use whichever rule is first.
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