Optus outage likely to force changes at telcos

A report on the handling and impact of last year's Optus outage has been handed to the government. (Dave Hunt/AAP PHOTOS)

The aftershocks of Optus's seismic network outage continue to shake the telecommunications industry, more than four months later.

In November, the telco giant experienced a 14-hour network outage that left more than 10 million customers and thousands of businesses without phone and internet services.