Aatrox Communications - Voice Service Outage – Incident details

**Date / time of Incident -** 04/12/2020 1:23 PM AEST **Date / time of Restoration -** 04/12/2020 1:54 PM AEST **Duration of Incident -** 31 minutes **Impact:** ‌A subset of Aatrox Communications SIP trunking services experienced intermittent registration and call drops. **Root Cause and Resolution:** This Incident was caused by malicious SIP traffic hitting one of our public-facing SBCs, this then triggered the SBC to throttle bandwidth in processing the SIP signalling as part of our DDoS prevention mechanism. A temporary fix was to block the offending IPs as well as tweaking some realm protection settings to alleviate the flow-on impact to customers. **Actions to mitigate recurrence:** An investigation of the issue indicates that the standard DDoS protections are working as expected. However, an investigation is ongoing to mitigate a specific configuration change. This is currently under review and close to implementation. This should help to resolve the issues seen during the outage.

Please be advised that issues with SIP Trunking services experiencing service degradation have now been resolved. If you are still experiencing issues please contact your support@aatroxcommunications.com.au

This issue looks to now be resolved and trunks are now registering. If not, please refresh your PBX registration or device. We will monitor the network and keep you updated with further updates and incident report once available.

We are continuing to monitor for any further issues.

This issue looks to now be resolved and trunks are now registering. If not, please refresh your PBX registration or device. We will monitor the network and keep you updated with further updates.