Source note · Passing call context with SIP UUI and custom headers
RFC 7434 restricts the isdn-uui package to the initial INVITE and to BYE within an INVITE dialog; re-INVITEs and other methods are not used for it.
Checked 2026-10-02
The UAC MUST only use this UUI mechanism extension package in association with the initial INVITE method and the BYE method relating to an INVITE dialog
- Vendor
- not restricted
- Product
- not restricted
- Subsystem
- ISDN UUI interworking
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 7434
- Checked
- 2026-10-02
Sources
- RFC 7434: Interworking ISDN Call Control User Information with SIP — IETF / RFC Editor · tier 1 standards and regulators · Sections 7 and 8
Cite this note
APA
WarmTransfer. (2026, October 2). Passing call context with SIP UUI and custom headers: source note sip-uui-context-passing-rfc7434-initial-invite-and-bye. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-uui-context-passing-rfc7434-initial-invite-and-bye
BibTeX
@misc{warmtransfer-claim-sip-uui-context-passing-rfc7434-initial-invite-and-bye,
title = {Passing call context with SIP UUI and custom headers: source note sip-uui-context-passing-rfc7434-initial-invite-and-bye},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-uui-context-passing-rfc7434-initial-invite-and-bye},
note = {Source note sip-uui-context-passing-rfc7434-initial-invite-and-bye, checked 2026-10-02}
}