Is it possible to filter the bridge of any SIP based traffic and rerouting it to the internet connection on the third interface ? We basicly want to use that internet connection for the sip traffic only.
I don’t know of a way to “filter” and route to your 3rd interface by packet type (SIP). But you can easily route all your SIP traffic by destination IP. You just tell the router to send all the packets destined for your SIP providers IP to use the 3rd interface.