Optus revealed earlier this afternoon that it had discovered an additional seven customers who had tried to call triple zero during its Thursday outage. The telco was already aware of 600 customer calls, with three of the cases linked to deaths. LoadingThe newly revealed failed calls were made between 12.17am and 12.30am. WA Police has just confirmed that they have been able to contact one of the customers, but are still trying to reach the second. WA Police have already conducted 149 welfare checks as a result of the outage.