Cause Identified: applying a vendor software update to re-enable the functionality. The patch will be deployed during the dedicated maintenance window 21:00–21:15 PT on October 8 (04:00–04:15 UTC on October 9).

We're continuing to investigate failures when creating BYO SIP trunks. Next update within 30 minutes, or sooner if the status changes.

We're seeing failures when creating BYO SIP trunks. Existing trunks and calls on them aren't affected. Our team is actively investigating and we'll post an update as soon as we have more information.