At approximately 9:00am AEST this morning, voice services were affected by a brute force attack.
This prevented inbound and outbound calls from connecting.

Our initial response mitigated the attack and normal service was resumed around 10:45am AEST.

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Around 5:00pm AEST, our voice gateway server encountered a systems fault which was caused (in part) by the mitigation strategy implemented earlier in the day. This prevented inbound and outbound calls from connecting.

We reverted the changes to the voice gateway server and adjusted our security settings to block the brute force attack.
Normal service was resumed at 8:00pm AEST.

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Brute force attacks aim to gain access to systems by repeatedly trying different combinations of access credentials. They are common but are usually managed automatically by our firewalls. This was a rare case in which manual intervention was required.

I sincerely apologize for the inconvenience caused. If you continue to encounter problems please restart your phone handset, and if the issue persists, contact us on 1300 724 817 or by emailing support@sigmatech.com.au

Kind regards,
James Doble