Hello, While trying to interop between a PJSIP-powered Asterisk instance and an Oracle SBC, I was required to include a port number in INVITE To: header. Currently, Asterisk doesn't include any port number in INVITE To: header, even if remote UDP port number differs from 5060. It doesn't prevent calls from going out. Do you know any PJSIP-based implementation of any kind, that conform to this requirement (that includes a port in INVITE To: header) ? Knowing this could help for further testing. Best regards