Source note · SIP TLS handshake failures on trunks
The Local Gateway sip-ua block sets 'transport tcp tls v1.2' and 'timers connection establish tls 5' (a minimum of 5 seconds, to be tuned to network conditions) for the TLS connection to Webex Calling.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Webex Calling Local Gateway (IOS XE)
- Subsystem
- SIP signaling TLS
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Configure Local Gateway on Cisco IOS XE for Webex Calling — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · Registration-based trunk configuration, sip-ua block
Cite this note
APA
WarmTransfer. (2026, September 25). SIP TLS handshake failures on trunks: source note sip-tls-handshake-failures-lgw-sip-ua-tls-settings. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-tls-handshake-failures-lgw-sip-ua-tls-settings
BibTeX
@misc{warmtransfer-claim-sip-tls-handshake-failures-lgw-sip-ua-tls-settings,
title = {SIP TLS handshake failures on trunks: source note sip-tls-handshake-failures-lgw-sip-ua-tls-settings},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-tls-handshake-failures-lgw-sip-ua-tls-settings},
note = {Source note sip-tls-handshake-failures-lgw-sip-ua-tls-settings, checked 2026-09-25}
}