RFC 3362 notes that T.38 allows the use of either TCP or UDP depending on the service environment.

Checked 2026-09-24

Vendor
IETF
Product
RFC 3362
Subsystem
transport
Deployment
standard
Region
not restricted
Release range
RFC 3362 (August 2002)
Checked
2026-09-24

Sources

Cite this note

APA

WarmTransfer. (2026, September 24). Fax and T.38 in cloud calling: source note fax-t38-rfc3362-tcp-or-udp. WarmTransfer. https://warmtransfer.net/knowledge/claims/fax-t38-rfc3362-tcp-or-udp

BibTeX

@misc{warmtransfer-claim-fax-t38-rfc3362-tcp-or-udp,
  title  = {Fax and T.38 in cloud calling: source note fax-t38-rfc3362-tcp-or-udp},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/fax-t38-rfc3362-tcp-or-udp},
  note   = {Source note fax-t38-rfc3362-tcp-or-udp, checked 2026-09-24}
}

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