DTMF — PJSIP Project documentation

Publisher

PJSIP project (Teluu)

URL

https://docs.pjsip.org/en/latest/specific-guides/sip/dtmf.html

Published

unknown

Updated

unknown

Accessed

2026-09-24

HTTP status

200

License

PJSIP documentation (project site); no-redistribution; short excerpts and locators only

Source notes citing this source

• PJSIP documentation warns that if the remote side does not support SIP INFO and never replies, the sender treats it as a transaction timeout and disconnects the call. in context
• PJSIP generates in-band DTMF tones but does not implement in-band DTMF detection. in context
• In PJSIP, sending RFC 4733 DTMF when the negotiated SDP lacks the telephone-event rtpmap returns PJMEDIA_RTP_EREMNORFC2833; any fallback is up to the application. in context
• PJSIP documentation calls RFC 4733 telephone-event the recommended, standards-based DTMF method. in context

Cite this source record

APA

WarmTransfer. (2026, September 24). DTMF — PJSIP Project documentation. WarmTransfer. https://warmtransfer.net/knowledge/sources/pjsip-docs-dtmf

BibTeX

@misc{warmtransfer-pjsip-docs-dtmf,
  title  = {DTMF — PJSIP Project documentation},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/pjsip-docs-dtmf},
  note   = {PJSIP project (Teluu), accessed 2026-09-24}
}