EE 284 Lecture Notes - Lecture 1: Magic Cookie, Master Sergeant, Called Party
Document Summary
Sip response: sip responses are sent to indicate status back to the caller, the start line of a sip response is a status line containing: A status code, which is a three-digit number indicating the outcome of the request. A reason phrase, which provides a textual description of the outcome. Thus, we could have a sip address such as sip:3344556789@telco. net. Request headers: these apply only to the requests, these include the subject and priority. Entity headers: the message body contains the information about the session or information to be presented to the user. For voip, this header will usually indicate sdp, in which case the header field will appear as. Sip call sequence: registration: the first step in sip is registration it gives the server an address to contact the user. This process contains the host at which the user has logged in. The via header will contain all the nodes in the travelled path.
