Source note · SIP trunk carrier turn-up and acceptance testing
CUBE's rtp-nte method, which Cisco labels RFC 2833, is the same named-telephone-event mechanism now specified by RFC 4733, so a carrier that asks for RFC 4733 DTMF is normally met by rtp-nte.
inferred · Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Unified Border Element (CUBE)
- Subsystem
- dtmf
- Deployment
- on-premises
- Region
- not restricted
- Release range
- IOS XE 17.6 onwards
- Status
- inferred
- Checked
- 2026-09-25
Sources
- Cisco Unified Border Element Configuration Guide - Cisco IOS XE 17.6 Onwards - DTMF Relay — Cisco Systems · tier 2 current vendor documentation · DTMF Relay chapter, rtp-nte description; combined with RFC 4733 header
Cite this note
APA
WarmTransfer. (2026, September 25). SIP trunk carrier turn-up and acceptance testing: source note sip-trunk-carrier-turn-up-rtp-nte-is-4733. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-trunk-carrier-turn-up-rtp-nte-is-4733
BibTeX
@misc{warmtransfer-claim-sip-trunk-carrier-turn-up-rtp-nte-is-4733,
title = {SIP trunk carrier turn-up and acceptance testing: source note sip-trunk-carrier-turn-up-rtp-nte-is-4733},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-trunk-carrier-turn-up-rtp-nte-is-4733},
note = {Source note sip-trunk-carrier-turn-up-rtp-nte-is-4733, checked 2026-09-25}
}