(Updates with a statement from the ARTC in the third and fourth paragraphs.)
Telstra Group (ASX:TLS) said overnight work has reduced the occurrence of the subsequent Triple Zero calling error by around 90%, with teams continuing efforts to fully resolve the issue, according to a Thursday statement from a Telstra spokesperson.
The company said its welfare check process remains in place and advised customers affected by the issue to wait for their emergency call to connect through another network or to redial using a different phone.
Meanwhile, the Australian Rail Track Corporation (ARTC) said Thursday that train services are gradually returning to schedule following the restoration of Telstra's 4G network, which is used for communication across Australia's interstate and regional rail network.
"ARTC expects network operations to progressively build throughout the morning, with a return to normal operating arrangements from later today, subject to operators being ready to resume services," it said.