Source note · Troubleshooting fax over IP failures
The ATA 191/192 Multiplatform guide states that if a T.38 call cannot be set up, the call automatically reverts to G.711 fallback.
Checked 2026-10-02
If a T.38 call cannot be set up, then the call automatically reverts to G.711 fallback.
- Vendor
- Cisco
- Product
- Cisco ATA 191 Multiplatform
- Subsystem
- T.38 fallback
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Cisco ATA 191 and ATA 192 Analog Telephone Adapter Administration Guide for Multiplatform Firmware - Advanced Options for Phone Services — Cisco · tier 2 current vendor documentation · Optimize Fax Completion Rates, gateway note
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting fax over IP failures: source note fax-over-ip-troubleshooting-ata-mpp-t38-to-g711. WarmTransfer. https://warmtransfer.net/knowledge/claims/fax-over-ip-troubleshooting-ata-mpp-t38-to-g711
BibTeX
@misc{warmtransfer-claim-fax-over-ip-troubleshooting-ata-mpp-t38-to-g711,
title = {Troubleshooting fax over IP failures: source note fax-over-ip-troubleshooting-ata-mpp-t38-to-g711},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/fax-over-ip-troubleshooting-ata-mpp-t38-to-g711},
note = {Source note fax-over-ip-troubleshooting-ata-mpp-t38-to-g711, checked 2026-10-02}
}