The trunk between the Local Gateway and the Webex cloud uses SIP over TLS, and media between them uses SRTP.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- CUBE Local Gateway
- Subsystem
- security
- Deployment
- on-premises
- Region
- not restricted
- Release range
- IOS XE 17.6.1a and later
- Checked
- 2026-09-24
Sources
- Configure Local Gateway on Cisco IOS XE for Webex Calling — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · Configure Local Gateway: TLS and SRTP
Cite this note
APA
WarmTransfer. (2026, September 24). Building a hybrid Unified CM and Webex Calling environment for a phased migration: source note cucm-webex-calling-hybrid-build-lgw-tls-srtp. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-webex-calling-hybrid-build-lgw-tls-srtp
BibTeX
@misc{warmtransfer-claim-cucm-webex-calling-hybrid-build-lgw-tls-srtp,
title = {Building a hybrid Unified CM and Webex Calling environment for a phased migration: source note cucm-webex-calling-hybrid-build-lgw-tls-srtp},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-webex-calling-hybrid-build-lgw-tls-srtp},
note = {Source note cucm-webex-calling-hybrid-build-lgw-tls-srtp, checked 2026-09-24}
}