A Taxonomy of Session Initiation Protocol (SIP) Back-to-Back User Agents

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Publisher: IETF
Doc Type: Informational
Pages: 10
Abstract: In many SIP deployments, SIP entities exist in the SIP signaling path between the originating and final terminating endpoints, which go beyond the definition of a SIP proxy, performing functions not defined in Standards Track RFCs. The only term for such devices provided in RFC 3261 is for a Back-to-Back User Agent (B2BUA), which is defined as the logical concatenation of a SIP User Agent Server (UAS) and User Agent Client (UAC). There are numerous types of SIP B2BUAs performing different roles in different ways; for example, IP Private Branch Exchanges (IPBXs), Session Border Controllers (SBCs), and Application Servers (ASs). This document identifies several common B2BUA roles in order to provide taxonomy other documents can use and reference.
Publication Date: 2013-12-01
Status Note: Informational
DOI: 10.17487/RFC7092
Link: https://doi.org/10.17487/RFC7092
Author(s): Hadriel Kaplan
Victor Pascual
Keyword(s): SIP, B2BUA, Taxonomy

Latest version of IETF RFC 7092

Document Versions — IETF RFC 7092

▶ IETF RFC 7092 (2013-12-01)

THIS DOC [ACTIVE] [LATEST VERSION]

Bibliographic Reference(s)

3GPP.TS-23.228.201309 — IMS EXTERNAL
IETF RFC 3261 [Active*]
IETF RFC 3323 [Active*]
IETF RFC 3550 [Active*]
IETF RFC 3711 [Active*]
IETF RFC 4733 [Active*]
IETF RFC 4975 [Active*]
IETF RFC 5366 [Active*]
RFC5369 — RFC5369 EXTERNAL
RFC5370 — RFC5370 EXTERNAL
IETF RFC 5853 [Active*]

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IETF RFC 7092, A Taxonomy of Session Initiation Protocol (SIP) Back-to-Back User Agents. Available at https://doi.org/10.17487/RFC7092

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IETF RFC 7092, A Taxonomy of Session Initiation Protocol (SIP) Back-to-Back User Agents. Available at https://doi.org/10.17487/RFC7092

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IETF RFC 7092, A Taxonomy of Session Initiation Protocol (SIP) Back-to-Back User Agents. Available at https://doi.org/10.17487/RFC7092

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<span class="citation"><cite>IETF RFC 7092</cite>, A Taxonomy of Session Initiation Protocol (SIP) Back-to-Back User Agents. Available at <a href="https://doi.org/10.17487/RFC7092" target="_blank" rel="noopener">https://doi.org/10.17487/RFC7092</a></span>

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IETF RFC 7092, A Taxonomy of Session Initiation Protocol (SIP) Back-to-Back User Agents
doi: 10.17487/RFC7092
url: https://doi.org/10.17487/RFC7092

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<cite id="bib-rfc7092">IETF RFC 7092</cite>, A Taxonomy of Session Initiation Protocol (SIP) Back-to-Back User Agents
<span class="doi">10.17487/RFC7092</span>
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Referenced By

IETF RFC 8873 [Active*]