I have obi1062 that is connected to a FreePBX. I have a working (registration and audio) line through UDP 5060. I am working on setting a TLS connection on the obi1062. I entered the Expert Configuration Menu and edit the ITSP Profile C SIP as follow:
ProxyServerPort 5061
ProxyServerTransport TLS
RegistrarServerPort 5061
X_OutboundProxyTransport TLS
I am able to get a registration, however I am getting "488 Not Acceptable Here" error. Of note, I have several softphones that connect to the FreePBX fine. In