Source note · SIP TLS handshake failures on trunks
CUBE's sip-ua transport command accepts 'transport tcp tls' followed by v1.0, v1.1, v1.2 (optionally with 'minimum') or v1.3 to pin or set a floor for the TLS version.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Unified Border Element (IOS XE)
- Subsystem
- TLS version negotiation
- Deployment
- on-premises
- Region
- not restricted
- Release range
- IOS XE 17.6 onwards; v1.3 keyword release not established
- Checked
- 2026-09-25
Sources
- Cisco Unified Border Element Configuration Guide - Cisco IOS XE 17.6 Onwards - SIP TLS Support — Cisco · tier 2 current vendor documentation · Configure SIP TLS, transport command syntax
Cite this note
APA
WarmTransfer. (2026, September 25). SIP TLS handshake failures on trunks: source note sip-tls-handshake-failures-cube-transport-syntax. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-tls-handshake-failures-cube-transport-syntax
BibTeX
@misc{warmtransfer-claim-sip-tls-handshake-failures-cube-transport-syntax,
title = {SIP TLS handshake failures on trunks: source note sip-tls-handshake-failures-cube-transport-syntax},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-tls-handshake-failures-cube-transport-syntax},
note = {Source note sip-tls-handshake-failures-cube-transport-syntax, checked 2026-09-25}
}