Asterisk SIP – Headers June 5, 2020 eduguru Header To Via Call-ID Contact From Subject Content-Length, Request URI INVITE sip:bob@biloxi.example.com SIP/2.0 The Request URI is the contact information of the next hop in the call route. In the above example, SIP - Headers, the username of the next hop is bob, Understand the SIP Header FieldsSIP – Headers A header is a component of a SIP message that conveys information about the message. It is Read more