How’s the SIP registrar supposed to handle concurrent REGISTER bursts when the Ohio BYOC trunk group pushes 500 endpoints at 0800 EST? Console traces show the digest challenge timing out and doing jack all while the carrier B2BUA waits for a 200 OK that never shows up. Architect v2024.3.1 is routing the traffic, but the platform keeps dropping half the requests and throwing a 403 Forbidden with a malformed WWW-Authenticate header. Failover logic isn’t retrying the auth handshake, so I’ll just bump the registration timer in the trunk config.