Hi folks Can I disable rport on outbound TCP SIP requests? The rport Via parameter is of course a good thing to set on outbound SIP requests when using UDP but I think it's a bad thing when using TCP. This is because outbound TCP requests use a dynamic source port and the UAS will not be able to establish a new TCP connection to this port if it needs to, for example to send a response after the connection has been closed. In most cases this won't be needed - hopefully the original connections remains open - but with mobility, firewalls, etc, connections do sometimes get closed between initial request and final response. Regards, Richard -- Richard Brady M: +44 (0)7771 623 348 T: +44 (0)20 8144 8160 E: rnbrady@gmail.com