A network upgrade gone wrong left some Telstra customers unable to make mobile phone calls on Tuesday morning.
A spokesperson for Telstra said the company had fixed the issue by around 9am. Triple zero was not affected, and people were still able to access the internet over the mobile network, they said.
“We’re sorry for the impact this had to people’s days. Our team worked to get everyone calling again as quickly as possible,” the spokesperson said.
“Some customers may need to retry calling if it doesn’t connect the first time, but then you’ll be good to go.”
The spokesperson told Guardian Australia the issue was caused by a planned upgrade that didn’t go to plan and had flow-on effects into the morning.
Telstra reported the issue was mostly affecting customers in New South Wales and Queensland.
Guardian Australia was contacted by several Telstra customers who said they were still having issues as of Tuesday afternoon in places including South Australia, Western Australia and the ACT.
A Telstra spokesperson said an issue where people could not call fixed line numbers could be fixed if they include the area code when dialling.
The company also recommended people switch airplane mode on and off on their mobile phone to fix the issue, or make a data call over WiFi or using apps like FaceTime.
The company has not said how many people were affected.
