- Encountering persistent SIP registration flapping on three BYOC trunks within the APAC region following a recent carrier-side firmware update.
- The trunks are configured with standard SIP credentials and outbound routing rules, yet they fail to maintain a stable 200 OK state from the Genesys Cloud SIP proxy.
- Logs indicate a cycle of 408 Request Timeout followed by immediate re-registration attempts, disrupting call flow and causing intermittent audio dropout.
- Verified that the carrier’s firmware update did not alter the SIP signaling port or authentication methods, but the failover logic seems to be triggering incorrectly.
- Current environment details: Genesys Cloud release 2023-12, BYOC trunks managed via Terraform provider v1.4.2.
- Checked SIP trace files and observed that the Via header is being modified unexpectedly by the carrier’s edge device.
- Need assistance in diagnosing whether this is a carrier-specific quirk or a misconfiguration in the trunk registration settings.
- Any insights on adjusting the SIP registration timeout values or bypassing the flapping behavior would be appreciated.