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IETF RFC 9878
[ACTIVE]

Updates to Private Header (P-Header) Extension Usage in Session Initiation Protocol (SIP) Requests and Responses

Metadata

Publisher
IETF
Doc Type
Informational
Pages
9
Abstract
The Third Generation Partnership Project (3GPP) has identified cases where different SIP private header extensions referred to as "P-" header fields, and defined in RFC 7315, need to be included in SIP requests and responses where they were not allowed according to RFC 7315. This document updates RFC 7315, in order to allow inclusion of the affected "P-" header fields in such requests and responses. This document obsoletes RFC 7976. The changes related to RFC 7976 involve the inclusion of the P-Visited-Network-ID header field in SIP responses. This document also makes updates to RFC 7315 in order to fix misalignments that occurred when RFC 3455 was obsoleted by RFC 7315.
Publication Date
2025-11-01
Status Note
Informational
DOI
10.17487/RFC9878
Link
https://doi.org/10.17487/RFC9878
Author(s)
Christer Holmberg
Nevenka Biondic
Gonzalo Salgueiro
Roland Jesske
Keyword(s)
3GPP, IMS
Latest version of IETF RFC 9878

Document Versions — IETF RFC 9878

  • ▶ IETF RFC 9878 (2025-11-01)
    THIS DOC [ACTIVE] [LATEST VERSION]

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Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/RFC9878.json

Supersedes:
IETF RFC 7976 [Superseded*]
Amends:
IETF RFC 7315 [Active*]

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IETF RFC 9878, Updates to Private Header (P-Header) Extension Usage in Session Initiation Protocol (SIP) Requests and Responses. Available at https://doi.org/10.17487/RFC9878
Snippet:
IETF RFC 9878, Updates to Private Header (P-Header) Extension Usage in Session Initiation Protocol (SIP) Requests and Responses. Available at https://doi.org/10.17487/RFC9878

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IETF RFC 9878, Updates to Private Header (P-Header) Extension Usage in Session Initiation Protocol (SIP) Requests and Responses. Available at https://doi.org/10.17487/RFC9878
Snippet:
<span class="citation"><cite>IETF RFC 9878</cite>, Updates to Private Header (P-Header) Extension Usage in Session Initiation Protocol (SIP) Requests and Responses. Available at <a href="https://doi.org/10.17487/RFC9878" target="_blank" rel="noopener">https://doi.org/10.17487/RFC9878</a></span>

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Preview:
IETF RFC 9878, Updates to Private Header (P-Header) Extension Usage in Session Initiation Protocol (SIP) Requests and Responses
doi: 10.17487/RFC9878
url: https://doi.org/10.17487/RFC9878
Snippet:
<li>
<cite id="bib-rfc9878">IETF RFC 9878</cite>, Updates to Private Header (P-Header) Extension Usage in Session Initiation Protocol (SIP) Requests and Responses
<span class="doi">10.17487/RFC9878</span>
</li>