AWS's recommended domain allowlist for the CCP includes TurnNlb-*.elb.{region}.amazonaws.com on UDP port 3478, outbound, for send and receive traffic.
Checked 2026-09-30
- Vendor
- Amazon Web Services
- Product
- Amazon Connect
- Subsystem
- softphone media / TURN
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-30
- Checked
- 2026-09-30
Sources
- Set up your network to use the Connect Customer Contact Control Panel (CCP) — Amazon Web Services · tier 2 current vendor documentation · Section 'Option 1 (recommended)', allowlist table row 'TurnNlb-*.elb.{region}.amazonaws.com'
Cite this note
APA
WarmTransfer. (2026, September 30). Troubleshooting browser softphone audio in cloud contact centers: source note browser-softphone-audio-troubleshooting-aws-turn-udp-3478. WarmTransfer. https://warmtransfer.net/knowledge/claims/browser-softphone-audio-troubleshooting-aws-turn-udp-3478
BibTeX
@misc{warmtransfer-claim-browser-softphone-audio-troubleshooting-aws-turn-udp-3478,
title = {Troubleshooting browser softphone audio in cloud contact centers: source note browser-softphone-audio-troubleshooting-aws-turn-udp-3478},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/browser-softphone-audio-troubleshooting-aws-turn-udp-3478},
note = {Source note browser-softphone-audio-troubleshooting-aws-turn-udp-3478, checked 2026-09-30}
}