…n RFC 2119 [RFC2119]. This document also reuses the SIP terminology defined in [RFC3261] and [RFC3265], and it specifies the usage of the following terms. Device: software or hardware entity containing one or more SIP user agents. It may also contain applications such as a DHCP c…

…. . . . . . . . . . . . . 28 1 . Introduction The Session Initiation Protocol [ RFC3261 ] is a widely-deployed technology for the management of media sessions (such as voice and video calls) over the Internet. SIP itself provides a signaling channel via TCP [ RFC0793 ] or UDP [ R…

…t within the body of protocols, such as the Session Initiation Protocol (SIP) [ RFC3261 ]. However, experience since the publication of RFC 3489 has found that classic STUN simply does not work sufficiently well to be a deployable solution. The address and port learned through cl…

…t within the body of protocols, such as the Session Initiation Protocol (SIP) [ RFC3261 ]. However, experience since the publication of RFC 3489 has found that classic STUN simply does not work sufficiently well to be a deployable solution. The address and port learned through cl…

… semicolon, in keeping with Session Initiation Protocol (SIP) URI conventions [ RFC3261 ]. The "tel" URI can be used as a request URI in SIP [ RFC3261 ] requests. The SIP specification also inherits the 'subscriber' part of the syntax as part of the 'user element' in the SIP URI.…

…t within the body of protocols, such as the Session Initiation Protocol (SIP) [ RFC3261 ]. However, experience since the publication of RFC 3489 has found that classic STUN simply does not work sufficiently well to be a deployable solution. The address and port learned through cl…

…tion 3.1 sip_from_tag SIP From tag header field parameter value IESG RFC8055 ][ RFC3261 sip_date SIP Date header field value IESG RFC8055 ][ RFC3261 sip_callid SIP Call-Id header field value IESG RFC8055 ][ RFC3261 sip_cseq_num SIP CSeq numeric header field parameter value IESG R…

…g [ RFC3204 ] alert the body is a custom ring tone to alert the user handling [ RFC3261 ] icon the body is displayed as an icon to the user handling [ RFC3261 ] render the body should be displayed to the user handling [ RFC3261 ] recipient-list-history the body contains a list of…

…r mechanism is used by protocols such as the Session Initiation Protocol (SIP) [RFC3261]. Protocols using offer/answer are difficult to operate through Network Address Translators (NATs). Because their purpose is to establish a flow of media packets, they tend to carry the IP add…

…shared secret exchanged in the rendezvous protocol used with ICE, such as SIP [ RFC3261 ]. This shared secret, in turn, is protected by that protocol exchange. In the case of SIP, the usage of the SIP Secure (SIPS) [ RFC3261 ] mechanism is RECOMMENDED. When this is done, an attac…

…for the keying material. When this specification is used in the context of SIP [RFC3261], the application SHOULD employ either the SIPS URI or S/MIME to provide protection for the SDP message and the keying material that it contains. The use of transport layer or IP layer securit…

…of situation are cellular systems using the Session Initiation Protocol (SIP; [ RFC3261 ]) and systems receiving Dual-Tone Multi-Frequency (DTMF) tones on a different host than the voice. 8.1 . SIP and Cellular Access Systems using a cellular access and SIP as a signalling protoc…

… mechanism is used by protocols such as the Session Initiation Protocol (SIP) [ RFC3261 ]. Protocols using offer/answer are difficult to operate through Network Address Translators (NATs). Because their purpose is to establish a flow of media packets, they tend to carry the IP ad…

…s implementation or application. Furthermore, the terminology described in SIP [RFC3261] regarding functions and components are used throughout the document. Wing, et al. Informational [Page 3] RFC 5479 Media Security Requirements April 2009 Additionally, the following items are …

…of situation are cellular systems using the Session Initiation Protocol (SIP; [ RFC3261 ]) and systems receiving Dual-Tone Multi-Frequency (DTMF) tones on a different host than the voice. 8.1 . SIP and Cellular Access Systems using a cellular access and SIP as a signalling protoc…