Cisco's Webex Calling security requirements list AES_CM_128_HMAC_SHA1_80 as the only supported SRTP key cipher suite.

Checked 2026-09-23

Vendor
Cisco
Product
Webex Calling
Subsystem
SIP and media
Deployment
multi-tenant
Region
not restricted
Release range
current as of 2026-09-23
Checked
2026-09-23

Sources

Cite this note

APA

WarmTransfer. (2026, September 23). SRTP and media encryption negotiation: source note srtp-media-security-webex-calling-sha1-80-only. WarmTransfer. https://warmtransfer.net/knowledge/claims/srtp-media-security-webex-calling-sha1-80-only

BibTeX

@misc{warmtransfer-claim-srtp-media-security-webex-calling-sha1-80-only,
  title  = {SRTP and media encryption negotiation: source note srtp-media-security-webex-calling-sha1-80-only},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/srtp-media-security-webex-calling-sha1-80-only},
  note   = {Source note srtp-media-security-webex-calling-sha1-80-only, checked 2026-09-23}
}

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