sip invite message example

In sip, both re-invite and update are used to modify the session parameter. The difference is that update does not affect the status of the dialog, and re-invite changes the status of the dialog. Therefore, update can be sent before the first invite is responded (that is, before 200ok of

is described using another protocol, is the Session Description Protocol SDP .) Request Message Request Line = method + space + request address + sip version number + blank line A request line is used as the starting line. The request line includes the method name, request URL, Protocol version number, and separated by spaces. Six request methods: Invite sends a

This digest from: http://blog.chinaunix.net/uid-20655530-id-1589483.htmlThe quickest way to learn the SIP protocol is to learn by example,Found a complete call flow, let's go!INVITEThe calling party Tesla First initiates the INVITE message to the called party Marconi. The INVITE