My scenario is as follows:
I have 2 internet links, one is dedicated to a public IP and the other is not.
I have already released the ports in the firewall, I have already disabled SIP ALG, I have left only one link, there is no way to make this SIP IP phone work.
My NAT is correct, and so is my route.
I’ve seen several forums and videos and none of them have solved my problem.
I ask the experts on duty to help me solve it!