[mikelward]

> All of Melbourne's train services stopped temporarily due to a communications outage, and Metro Trains said it was unable to rely on its back-up system, which used the Optus mobile network.

Their primary and their backup were both Optus. Not much of a backup.

[Gigachad]

I wonder what they ended up doing to resolve it. There was a disruption but it was for less than an hour. Someone wifi hotspot the train network from their phone or something.