Source note · SIP trunk carrier turn-up and acceptance testing
A turn-up failover test is only valid if it reproduces the trigger the platform actually acts on: missing OPTIONS for Direct Routing SBC health or CUBE dial-peer busyout, a configured final response code before any 18x for Direct Routing SIP-code failover, and no SIP response within 4 seconds for Twilio origination.
inferred · Checked 2026-09-25
- Vendor
- multi-vendor
- Product
- SIP trunking
- Subsystem
- failover
- Deployment
- any
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Status
- inferred
- Checked
- 2026-09-25
Sources
- Trunk failover on outbound calls - Microsoft Teams — Microsoft · tier 2 current vendor documentation · Synthesis across the failover sections of the cited sources
Cite this note
APA
WarmTransfer. (2026, September 25). SIP trunk carrier turn-up and acceptance testing: source note sip-trunk-carrier-turn-up-failover-test-trigger. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-trunk-carrier-turn-up-failover-test-trigger
BibTeX
@misc{warmtransfer-claim-sip-trunk-carrier-turn-up-failover-test-trigger,
title = {SIP trunk carrier turn-up and acceptance testing: source note sip-trunk-carrier-turn-up-failover-test-trigger},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-trunk-carrier-turn-up-failover-test-trigger},
note = {Source note sip-trunk-carrier-turn-up-failover-test-trigger, checked 2026-09-25}
}