Source note · One-way and no-way audio diagnosis
On AS5350 and AS5400 gateways, voice-fastpath caches RTP stream information, so the logical channel is not updated after hold or transfer, causing one-way audio. The guide's fix is no voice-fastpath enable.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Cisco AS5350
- Subsystem
- voice fastpath
- Deployment
- on-premises
- Region
- not restricted
- Release range
- AS5350/AS5400 platforms
- 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 > voice-fastpath subsection
Cite this note
APA
WarmTransfer. (2026, September 24). One-way and no-way audio diagnosis: source note one-way-audio-as5x00-voice-fastpath. WarmTransfer. https://warmtransfer.net/knowledge/claims/one-way-audio-as5x00-voice-fastpath
BibTeX
@misc{warmtransfer-claim-one-way-audio-as5x00-voice-fastpath,
title = {One-way and no-way audio diagnosis: source note one-way-audio-as5x00-voice-fastpath},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/one-way-audio-as5x00-voice-fastpath},
note = {Source note one-way-audio-as5x00-voice-fastpath, checked 2026-09-24}
}