Telcos are required to do a welfare check on people who have tried to call during a large network outage of telecommunications systems, under newly legislated rules for emergency call services in Australia.

Bendigo Bank has been hit by a major IT outage which has put its online services and ATMs out action for most of today.

Telstra Internet subscribers, who are connected by the company's HFC cable network, suffered outages in western parts of Brisbane last month, and not NBN users, as claimed by a user in that area.