Source note · SIP trunk carrier turn-up and acceptance testing
Because RFC 4733 DTMF support is negotiated per call in SDP, a DTMF acceptance test is only meaningful if it covers both inbound and outbound calls and every codec the trunk may negotiate.
inferred · Checked 2026-09-25
- Vendor
- multi-vendor
- Product
- SIP trunking
- Subsystem
- dtmf
- Deployment
- any
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Status
- inferred
- Checked
- 2026-09-25
Sources
- RFC 4733: RTP Payload for DTMF Digits, Telephony Tones, and Telephony Signals — IETF / RFC Editor · tier 1 standards and regulators · Sections 2.4.1 and 2.5.1.1 (negotiation); reasoning by the researcher
Cite this note
APA
WarmTransfer. (2026, September 25). SIP trunk carrier turn-up and acceptance testing: source note sip-trunk-carrier-turn-up-dtmf-test-both-offers. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-trunk-carrier-turn-up-dtmf-test-both-offers
BibTeX
@misc{warmtransfer-claim-sip-trunk-carrier-turn-up-dtmf-test-both-offers,
title = {SIP trunk carrier turn-up and acceptance testing: source note sip-trunk-carrier-turn-up-dtmf-test-both-offers},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-trunk-carrier-turn-up-dtmf-test-both-offers},
note = {Source note sip-trunk-carrier-turn-up-dtmf-test-both-offers, checked 2026-09-25}
}