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428 Use Identity Header The server policy requires an Identity header, and one has not been provided. [14]: p11 429 Provide Referrer Identity The server did not receive a valid Referred-By token on the request. [15] 430 Flow Failed A specific flow to a user agent has failed, although other flows may succeed.
Authenticated Identity Body or AIB is a method allowing parties in a network to share authenticated identity, thereby increasing the integrity of their SIP communications. AIBs extend other authentication methods like S/MIME to provide a more specific mechanism to introduce integrity to SIP transmissions.
The Session Initiation Protocol (SIP) is a signaling protocol used for initiating, maintaining, and terminating communication sessions that include voice, video and messaging applications. [1] SIP is used in Internet telephony, in private IP telephone systems, as well as mobile phone calling over LTE . [2]
A SIP address is written in user@domain.tld format in a similar fashion to an email address.An address like: sip:1-999-123-4567@voip-provider.example.net. instructs a SIP client to use the NAPTR and SRV schemes to look up the SIP server associated with the DNS name voip-provider.example.net and connect to that server.
The Private Header Extensions to SIP, [6] also known as P-Headers, are special header fields whose applicability is limited to private networks with a certain topology and characteristics of lower layers' protocols. They were designed specifically to meet the 3GPP requirements because a more general solution was not available.
MSRP syntax is similar to other IETF text based protocols such as SIP, HTTP and RTSP. MSRP requires a reliable transport layer, like TCP.Each message is either a request or a response and uses URIs; a message contains headers and a body that can carry any type of data, including binary information.
The Cache-Control: no-cache HTTP/1.1 header field is also intended for use in requests made by the client. It is a means for the browser to tell the server and any intermediate caches that it wants a fresh version of the resource. The Pragma: no-cache header field, defined in the HTTP/1.0 spec, has the same purpose. It, however, is only defined ...
JsSIP implements the following SIP specifications: RFC 3261 — SIP: Session Initiation Protocol; RFC 3311 — SIP Update Method; RFC 3326 — The Reason Header Field for SIP; RFC 3327 — SIP Extension Header Field for Registering Non-Adjacent Contacts (Path header) RFC 3428 — SIP Extension for Instant Messaging (MESSAGE method)