Source note · TLS certificates and secure SIP failures
Cisco states that the TLS versions supported for secure SIP in Webex Calling are TLS 1.2 and TLS 1.3.
Checked 2026-09-16
- Vendor
- Cisco
- Product
- Webex Calling
- Subsystem
- transport security
- Deployment
- not restricted
- Region
- not restricted
- Release range
- not restricted
- Checked
- 2026-09-16
Sources
- Security requirements for Webex Calling — Cisco Systems, Inc. (help.webex.com) · tier 2 current vendor documentation · Requirements for SIP and media table, TLS version row
Cite this note
APA
WarmTransfer. (2026, September 16). TLS certificates and secure SIP failures: source note siptls-two-tls-versions-for-secure-sip. WarmTransfer. https://warmtransfer.net/knowledge/claims/siptls-two-tls-versions-for-secure-sip
BibTeX
@misc{warmtransfer-claim-siptls-two-tls-versions-for-secure-sip,
title = {TLS certificates and secure SIP failures: source note siptls-two-tls-versions-for-secure-sip},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/siptls-two-tls-versions-for-secure-sip},
note = {Source note siptls-two-tls-versions-for-secure-sip, checked 2026-09-16}
}