RFC 6140 is designed for SIP-PBXs that cannot be assumed to have a static IP address or a DNS entry that reliably resolves to them.
Checked 2026-10-02
- Vendor
- not restricted
- Product
- not restricted
- Subsystem
- registration
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 6140
- Checked
- 2026-10-02
Sources
- RFC 6140: Registration for Multiple Phone Numbers in the Session Initiation Protocol (SIP) — IETF / RFC Editor · tier 1 standards and regulators · Section 2 (constraints list)
Cite this note
APA
WarmTransfer. (2026, October 2). SIP trunk authentication: registration and static IP and mutual TLS: source note sip-trunk-authentication-models-rfc6140-no-static-ip-assumed. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-trunk-authentication-models-rfc6140-no-static-ip-assumed
BibTeX
@misc{warmtransfer-claim-sip-trunk-authentication-models-rfc6140-no-static-ip-assumed,
title = {SIP trunk authentication: registration and static IP and mutual TLS: source note sip-trunk-authentication-models-rfc6140-no-static-ip-assumed},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-trunk-authentication-models-rfc6140-no-static-ip-assumed},
note = {Source note sip-trunk-authentication-models-rfc6140-no-static-ip-assumed, checked 2026-10-02}
}