Source note · One-way and no-way audio diagnosis
Cisco's Unified CM 12.5(1) troubleshooting guide says RTP streams have no connection because they run over UDP, so traffic can get through in one direction and be lost in the other.
Checked 2026-09-24
RTP streams have no connections (transported over UDP), traffic may travel successfully in one direction but get lost in the opposite direction.
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- media path
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Unified CM 12.5(1) guide, updated 2023-11-24
- Checked
- 2026-09-24
Sources
- Troubleshooting Guide for Cisco Unified Communications Manager Release 12.5(1) — Device Issues — Cisco Systems, Inc. (www.cisco.com) · tier 2 current vendor documentation · Device Issues > Voice Quality > One-Way Audio or No Audio (opening paragraphs)
Cite this note
APA
WarmTransfer. (2026, September 24). One-way and no-way audio diagnosis: source note one-way-audio-rtp-connectionless. WarmTransfer. https://warmtransfer.net/knowledge/claims/one-way-audio-rtp-connectionless
BibTeX
@misc{warmtransfer-claim-one-way-audio-rtp-connectionless,
title = {One-way and no-way audio diagnosis: source note one-way-audio-rtp-connectionless},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/one-way-audio-rtp-connectionless},
note = {Source note one-way-audio-rtp-connectionless, checked 2026-09-24}
}