Source note · DTMF methods and interoperability failures
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.
Checked 2026-09-24
- Vendor
- PJSIP project
- Product
- PJSIP
- Subsystem
- SIP INFO DTMF
- Deployment
- embedded-library
- Region
- not restricted
- Release range
- latest docs as of 2026-09-24
- Checked
- 2026-09-24
Sources
- DTMF — PJSIP Project documentation — PJSIP project (Teluu) · tier 3 vendor-maintained repositories · Sending DTMF
Cite this note
APA
WarmTransfer. (2026, September 24). DTMF methods and interoperability failures: source note dtmf-interop-pjsip-info-timeout-drop. WarmTransfer. https://warmtransfer.net/knowledge/claims/dtmf-interop-pjsip-info-timeout-drop
BibTeX
@misc{warmtransfer-claim-dtmf-interop-pjsip-info-timeout-drop,
title = {DTMF methods and interoperability failures: source note dtmf-interop-pjsip-info-timeout-drop},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/dtmf-interop-pjsip-info-timeout-drop},
note = {Source note dtmf-interop-pjsip-info-timeout-drop, checked 2026-09-24}
}