Optus has revealed that 2697 customers tried to call 000 during its national outage of phone and internet services but could not connect to emergency services – more than 10 times the number it had previously disclosed to a senate inquiry.

Former Optus chief executive Kelly Bayer Rosmarin told a Senate hearing in November that 228 triple-zero calls by Optus customers failed during a 14-hour outage on November 8.