Asterisk documentation describes rfc4733 DTMF as sent out of band of the main audio stream, and Genesys describes RTP Events as out-of-band.

disputed · Checked 2026-09-24

Vendor
Sangoma
Product
Asterisk res_pjsip
Subsystem
terminology
Deployment
any
Region
not restricted
Release range
current as of 2026-09-24
Status
disputed
Checked
2026-09-24

Sources

Cite this note

APA

WarmTransfer. (2026, September 24). DTMF methods and interoperability failures: source note dtmf-interop-nte-classed-oob-asterisk. WarmTransfer. https://warmtransfer.net/knowledge/claims/dtmf-interop-nte-classed-oob-asterisk

BibTeX

@misc{warmtransfer-claim-dtmf-interop-nte-classed-oob-asterisk,
  title  = {DTMF methods and interoperability failures: source note dtmf-interop-nte-classed-oob-asterisk},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/dtmf-interop-nte-classed-oob-asterisk},
  note   = {Source note dtmf-interop-nte-classed-oob-asterisk, checked 2026-09-24}
}

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