Source note · One-way and no-way audio diagnosis
Technote 214622 lists a fourth remedy: CUBE sends locally generated STUN packets to the negotiated media address, which can open the far-end firewall. It is configured at dial-peer level.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Cisco Unified Border Element
- Subsystem
- STUN
- Deployment
- on-premises
- Region
- not restricted
- Release range
- technote 214622
- Checked
- 2026-09-24
Sources
- Troubleshoot No-way Audio Issue with Hairpin Calls on CUBE — Cisco Systems, Inc. (www.cisco.com) · tier 2 current vendor documentation · Technote 214622, Solution > Enable CUBE to send STUN packets
Cite this note
APA
WarmTransfer. (2026, September 24). One-way and no-way audio diagnosis: source note one-way-audio-hairpin-cube-stun. WarmTransfer. https://warmtransfer.net/knowledge/claims/one-way-audio-hairpin-cube-stun
BibTeX
@misc{warmtransfer-claim-one-way-audio-hairpin-cube-stun,
title = {One-way and no-way audio diagnosis: source note one-way-audio-hairpin-cube-stun},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/one-way-audio-hairpin-cube-stun},
note = {Source note one-way-audio-hairpin-cube-stun, checked 2026-09-24}
}