Australia’s largest operator Telstra experienced another network outage just hours after announcing it will spend AUD50 million ($37.8 million) to address network issues identified in an official review.

The operator conducted a review of the causes behind a raft of network disruptions over the past three months. Just hours after introducing the recommended fixes, hundreds of fixed-line broadband customers were affected by an internet outage, which the company said lasted less than 30 minutes, Australia’s Daily Mail reported.

In early February its 3G and 4G networks experienced outages nationwide for at least three to four hours, and twice in March its prepaid customers faced network disruptions, which the operator said weren’t related to the original interruption.

Telstra chief operations officer Kate McKenzie, who spoke at its investor day presentation in Melbourne yesterday, said the review had identified three key problem areas.

She said the review panel confirmed the root causes of the disruptions and implemented a range of steps to reduce the likelihood of these issues happening again. The measures included increasing redundancy in the nodes, adding more capacity to the core network, introducing new processes and procedures for key network element restarts, and improving resilience in Telstra’s international connectivity, McKenzie said.

The second recommendation was to improve network monitoring by investing AUD25 million on monitoring equipment. “In any sophisticated, world-class network there will always be disruptions, which is why we use sophisticated tools to help us better detect issues and allow stronger monitoring,” she said.

The operator plans to introduce more real-time traffic monitoring along with more real-time customer impact reporting, which will result in better early warning of any traffic patterns in the network that might be a cause for concern, she said.

The final action point is to improve Telstra’s recovery time for customers in the event of a disconnection, so any disruption to services will have a shorter duration. She said Telstra is investing an additional AUD25 million to increase its capacity to handle a large number of re-registrations simultaneously.

The review was carried out by Telstra’s specialist teams, experts from Ericsson, Juniper and Cisco, and an independent adviser from Tech Mahindra.