Predictive dialer stalling on Ohio BYOC failover path

DIALING_ENGINE_ERROR: OUTBOUND_QUEUE_TIMEOUT
Architect v2024.3.1 routes the predictive campaign straight to the Ohio BYOC pool. SIP registration holds steady, but the outbound queue stalls hard once traffic hits the secondary carrier failover path. Console traces show the proxy dropping the INVITE after a 200 OK. Ohio registrar’s throttling concurrent predictive INVITEs, or the failover logic’s got a timeout mismatch.

SIP_TRACE: INVITE sent to 10.44.12.9:5060 - no response after 15s
Still digging through the carrier logs.