Allow SIP with TLS on a ASA5550

Hi everyone.

I’ve allowed traffic to the server on ports TCP/5061 & UDP/16384-32768, and from the server to the users on UDP/16384-32768.

The server has a private IP, but it’s accesses using a NAT on a public IP address.

For some reason, clients can register to the SIP server but they can’t make calls.

Anyone had this problem and found a solution?

Anyone has an idea?