Stuck on reconciling BYOC trunk failover latency with Architect IVR session persistence. We manage 15 trunks across APAC. When primary registration drops, the ~300ms switch triggers SIP 408 timeouts. This disrupts the IVR flow, causing variables to reset before the Set Contact Attributes block completes. Is there a specific timeout configuration in the SIP Trunk settings or the IVR Flow itself that can absorb this latency without dropping the session? How do we prevent variable loss during carrier failover?