{"draft":"draft-ietf-sip-srv-06","doc_id":"RFC3263","title":" Session Initiation Protocol (SIP): Locating SIP Servers ","authors":["J. Rosenberg","H. Schulzrinne"],"format":["ASCII","HTML"],"page_count":"17","pub_status":"PROPOSED STANDARD","status":"PROPOSED STANDARD","source":"Session Initiation Protocol","abstract":" The Session Initiation Protocol (SIP) uses DNS procedures to allow a client to resolve a SIP Uniform Resource Identifier (URI) into the IP address, port, and transport protocol of the next hop to contact.  It also uses DNS to allow a server to send a response to a backup client if the primary client has failed.  This document describes those DNS procedures in detail.  [STANDARDS-TRACK]","pub_date":"May 2002","keywords":["SIP","Session Initiation Protocol","application-layer","multimedia","multicast","unicast"],"obsoletes":["RFC2543"],"obsoleted_by":[],"updates":[],"updated_by":["RFC7984","RFC8553"],"see_also":[],"doi":"10.17487\/RFC3263","errata_url":null}