Some Sydney-based Optus Business customers on the Evolve network experienced lengthy outages this morning due to a failure on the telecommunications provider's end.
Optus has confirmed a "hardware issue impacted a router in an Optus exchange" in Ultimo.
While the telco said it caused "intermittent dropouts," the outage experienced by IDG Communications, the publisher of ARN, lasted for about four hours between 05:00 and 09:00 this morning. During that period, the network was only available for very brief periods before going under once more.
In a statement, Optus said it apologised for the inconvenience caused by the fault.
Optus did not comment on the extent of the disruption, nor did it name which specific product was the cause of the incident.