Source note · SRTP and media encryption negotiation
CUBE's SRTP fallback option lets a call revert to RTP when the far end does not support SRTP, which Cisco positions as needed for non-secure supplementary services such as music on hold and call transfer.
Checked 2026-09-23
- Vendor
- Cisco
- Product
- Cisco Unified Border Element (CUBE) on IOS XE
- Subsystem
- SRTP fallback
- Deployment
- on-premises
- Region
- not restricted
- Release range
- IOS XE 17.6 onwards guide
- Checked
- 2026-09-23
Sources
- Cisco Unified Border Element Configuration Guide - Cisco IOS XE 17.6 Onwards - SRTP-SRTP Interworking — Cisco Systems · tier 2 current vendor documentation · SRTP-SRTP Interworking, SRTP fallback
Cite this note
APA
WarmTransfer. (2026, September 23). SRTP and media encryption negotiation: source note srtp-media-security-cube-srtp-fallback. WarmTransfer. https://warmtransfer.net/knowledge/claims/srtp-media-security-cube-srtp-fallback
BibTeX
@misc{warmtransfer-claim-srtp-media-security-cube-srtp-fallback,
title = {SRTP and media encryption negotiation: source note srtp-media-security-cube-srtp-fallback},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/srtp-media-security-cube-srtp-fallback},
note = {Source note srtp-media-security-cube-srtp-fallback, checked 2026-09-23}
}