Source note · Troubleshooting fax over IP failures
By default, Webex Calling ATAs send fax with T.38 mode disabled, and the fax data is encrypted from the ATA to the Webex Calling service.
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, opening section
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting fax over IP failures: source note fax-over-ip-troubleshooting-wxc-ata-t38-off. WarmTransfer. https://warmtransfer.net/knowledge/claims/fax-over-ip-troubleshooting-wxc-ata-t38-off
BibTeX
@misc{warmtransfer-claim-fax-over-ip-troubleshooting-wxc-ata-t38-off,
title = {Troubleshooting fax over IP failures: source note fax-over-ip-troubleshooting-wxc-ata-t38-off},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/fax-over-ip-troubleshooting-wxc-ata-t38-off},
note = {Source note fax-over-ip-troubleshooting-wxc-ata-t38-off, checked 2026-10-02}
}