Source note · Passing call context with SIP UUI and custom headers
RFC 7434 notes that UUI data exceeding what an ISDN interworking point supports can be discarded there without any error being signalled back to the sender.
Checked 2026-10-02
- 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 · Section 3.1
Cite this note
APA
WarmTransfer. (2026, October 2). Passing call context with SIP UUI and custom headers: source note sip-uui-context-passing-rfc7434-oversize-discarded. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-uui-context-passing-rfc7434-oversize-discarded
BibTeX
@misc{warmtransfer-claim-sip-uui-context-passing-rfc7434-oversize-discarded,
title = {Passing call context with SIP UUI and custom headers: source note sip-uui-context-passing-rfc7434-oversize-discarded},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-uui-context-passing-rfc7434-oversize-discarded},
note = {Source note sip-uui-context-passing-rfc7434-oversize-discarded, checked 2026-10-02}
}