Source note · TLS certificates and secure SIP failures
Cisco gives AES_CM_128_HMAC_SHA1_80 as the only SRTP key supported for secure media in Webex Calling.
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, SRTP row
Cite this note
APA
WarmTransfer. (2026, September 16). TLS certificates and secure SIP failures: source note siptls-srtp-key-is-a-single-value. WarmTransfer. https://warmtransfer.net/knowledge/claims/siptls-srtp-key-is-a-single-value
BibTeX
@misc{warmtransfer-claim-siptls-srtp-key-is-a-single-value,
title = {TLS certificates and secure SIP failures: source note siptls-srtp-key-is-a-single-value},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/siptls-srtp-key-is-a-single-value},
note = {Source note siptls-srtp-key-is-a-single-value, checked 2026-09-16}
}