Source note · Troubleshooting fax over IP failures
On the Cisco ATA 191 with Unified CM, V.34 is not supported for T.38 relay fax.
Checked 2026-10-02
V.34 is not supported for T.38 relay fax.
- Vendor
- Cisco
- Product
- Cisco ATA 191
- Subsystem
- T.38
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Cisco ATA 191 Analog Telephone Adapter Administration Guide for Cisco Unified Communications Manager - Configure Fax Services — Cisco Systems · tier 2 current vendor documentation · Configure Fax Services, supported modem standards note
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting fax over IP failures: source note fax-over-ip-troubleshooting-ata191-no-v34-t38. WarmTransfer. https://warmtransfer.net/knowledge/claims/fax-over-ip-troubleshooting-ata191-no-v34-t38
BibTeX
@misc{warmtransfer-claim-fax-over-ip-troubleshooting-ata191-no-v34-t38,
title = {Troubleshooting fax over IP failures: source note fax-over-ip-troubleshooting-ata191-no-v34-t38},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/fax-over-ip-troubleshooting-ata191-no-v34-t38},
note = {Source note fax-over-ip-troubleshooting-ata191-no-v34-t38, checked 2026-10-02}
}