If ATA faxes still fail on Webex Calling, the guidance is to change the fax machine's ECM setting and lower its speed to 9600 or 2400 bps.
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 · article body - 'What to do next'
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting analog phones and FXS ports with no dial tone or failed calls: source note analog-fxs-troubleshooting-wxc-fax-ecm-baud. WarmTransfer. https://warmtransfer.net/knowledge/claims/analog-fxs-troubleshooting-wxc-fax-ecm-baud
BibTeX
@misc{warmtransfer-claim-analog-fxs-troubleshooting-wxc-fax-ecm-baud,
title = {Troubleshooting analog phones and FXS ports with no dial tone or failed calls: source note analog-fxs-troubleshooting-wxc-fax-ecm-baud},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/analog-fxs-troubleshooting-wxc-fax-ecm-baud},
note = {Source note analog-fxs-troubleshooting-wxc-fax-ecm-baud, checked 2026-10-02}
}