Source note · Fax and T.38 in cloud calling
Cisco's CUBE fax note says T.38 version 0 carries G3 fax speeds while T.38 version 3 supports Super G3 from Cisco IOS 15.1(1)T.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Cisco Unified Border Element
- Subsystem
- fax interworking
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Cisco IOS 15.1(1)T and later for version 3
- Checked
- 2026-09-24
Sources
- CUBE Third-Party Interoperability Fax Guidelines — Cisco · tier 2 current vendor documentation · FoIP Transport Methods section; T.38 versions
Cite this note
APA
WarmTransfer. (2026, September 24). Fax and T.38 in cloud calling: source note fax-t38-cube-t38-version-superg3. WarmTransfer. https://warmtransfer.net/knowledge/claims/fax-t38-cube-t38-version-superg3
BibTeX
@misc{warmtransfer-claim-fax-t38-cube-t38-version-superg3,
title = {Fax and T.38 in cloud calling: source note fax-t38-cube-t38-version-superg3},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/fax-t38-cube-t38-version-superg3},
note = {Source note fax-t38-cube-t38-version-superg3, checked 2026-09-24}
}