When using SIP/{Number}@{Provider} format for call , transport=udp parameter is missing in request URI of SIP INVITE

Question

Transport parameter is not sent in Request URI when used SIP/{Number}@{Provider} format for calling in dial plan, but when use SIP/{Provider}, transport parameter is sent in the request URI.

I want to send transport parameter even in SIP/{Number}@{Provider} format.

Answer 1

这只是意味着您同时拥有tcp和udp，首先是tcp。