Telstra says its emergency roaming project with TPG and Optus is nearing completion.

The telcos are working to enhance mobile connectivity during natural disasters in regional areas, filling a gap identified in a recent ACCC report.

The report highlighted Australia's delay in establishing temporary roaming capabilities compared to nations like the US, Canada, and Japan.

Following Communications Minister Michelle Rowland's directive last October for a feasibility study on such a system, Telstra says it has demonstrated its potential through a successful simulation at a Gold Coast lab. 

This test reportedly showcased the ability for mobile phones from one network to seamlessly connect to another in disaster-hit areas.

The proposed system, aimed at facilitating essential calling and texting during disasters, will require government support for its deployment. 

The final cost and deployment timeline remain unclear.