I am doing some test in a callback scenario. We make a call from the server to the caller through A provider which is answered. Then we make a sencod call to the calle through B provider. When callee ring is ready, B provider send to our server a 180 Ringing but the server does not start generate that ringing tone to the caller.

You can see full flow here:

Is there any way to force FS to generate ringing for A leg when a 180 gets received from B leg?

Regards