How to make friends asterisk and gateway on tomato?

Question

Asterisk

There is a server on asterisk freepbx router Asus [email protected] and yota gemteck router
wan switching between provider wire and yota (failover) is configured. Switching occurs and everything works except for asterisk (calls do not go anywhere) asterisk cannot connect to the zadarma server. In this case, the softphone works. When you connect the provider's cable, it does not start working back. It is treated only by rebooting the gateway. How to make friends?

Answer 1

I solved the problem by migrating to [email protected], the conntrack entries are cleared there by the command
foreach i in=[/ip firewall connection find] do={/ip firewall connection remove $i}

Answer 2

conntrack records are not cleared when switching default route

Answer 3

I'm not sure that I can help, it does not connect at all? maybe firewall rules, and if it doesn’t ring, try changing codecs

Answer 4

Try after switching the Internet on the gateway, in asterisk do reload
ps in general, asterisk does not really like to work for nat