Grandstream HT80x V2 fax defaults to T.38 Group 3 fax relay up to 14.4 kbps with automatic fallback to G.711 fax pass-through.
Checked 2026-10-02
- Vendor
- Grandstream
- Product
- Grandstream HT801 V2
- Subsystem
- fax
- Deployment
- on-premises, multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- HT80x V2 - Administration Guide — Grandstream Networks · tier 2 current vendor documentation · fax configuration - Fax Mode
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-ht80x-fax-default. WarmTransfer. https://warmtransfer.net/knowledge/claims/analog-fxs-troubleshooting-ht80x-fax-default
BibTeX
@misc{warmtransfer-claim-analog-fxs-troubleshooting-ht80x-fax-default,
title = {Troubleshooting analog phones and FXS ports with no dial tone or failed calls: source note analog-fxs-troubleshooting-ht80x-fax-default},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/analog-fxs-troubleshooting-ht80x-fax-default},
note = {Source note analog-fxs-troubleshooting-ht80x-fax-default, checked 2026-10-02}
}