Source note · Troubleshooting fax over IP failures
If Webex Calling ATA fax problems persist after enabling T.38, Cisco suggests lowering the fax machine baud rate to 9600 or 2400 bps, adjusting ECM, and sending fewer pages per call.
Checked 2026-10-02
- Vendor
- Cisco
- Product
- Webex Calling
- Subsystem
- ATA fax
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Improve fax transmission with your ATA — Cisco (Webex Help Center) · tier 2 current vendor documentation · Troubleshooting list
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting fax over IP failures: source note fax-over-ip-troubleshooting-wxc-lower-baud-ecm. WarmTransfer. https://warmtransfer.net/knowledge/claims/fax-over-ip-troubleshooting-wxc-lower-baud-ecm
BibTeX
@misc{warmtransfer-claim-fax-over-ip-troubleshooting-wxc-lower-baud-ecm,
title = {Troubleshooting fax over IP failures: source note fax-over-ip-troubleshooting-wxc-lower-baud-ecm},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/fax-over-ip-troubleshooting-wxc-lower-baud-ecm},
note = {Source note fax-over-ip-troubleshooting-wxc-lower-baud-ecm, checked 2026-10-02}
}