Telstra customers impacted by last week’s outage will be able to apply for compensation from the telco after mobile voice calls and data services stopped working.Millions of Australians had no mobile phone coverage and businesses were left without digital payments during the nationwide outage last Wednesday.Hundreds of people across the nation could not connect to emergency services through Telstra, seeing the telco conduct more than 600 welfare checks.Train services in NSW and Victoria were halted during the outage and EV charging network company Chargefox said a “small number” of its public chargers were affected on Wednesday morning. Taxi, Uber passengers and Uber Eats were also impacted.Telstra chief financial officer Michael Ackland said business customers that experienced a direct financial loss because of the outage could request a compensation assessment by lodging an online complaint with the telco.Business customers will need to provide evidence of their loss.“We require evidence to support your claim and will ask for you to provide this via a reply to that email,” Mr Ackland said.“Providing a clear description of the impact, your estimated claim amount, and supporting documentation will help us assess your claim more efficiently.“We may contact you by phone to discuss further evidence required or to clarify your claim, if we need to.”Residential and consumer customers were also invited to complain if they were affected by the outage.“We want to apologise again for the disruption these issues had on our customers and the broader community,” Mr Ackland said.“We know how much you rely on our network – for work, for travel and to stay safe – and we take that responsibility very seriously.”The Telstra executive said they identified an issue with a network device that kept time synchronised across parts of their mobile network early last Wednesday.He said voice and data services were intermittently disrupted when the network lost synchronisation and the issue was mostly resolved later that afternoon.“It took a little longer for some business customers to fully restore their services and we worked with them closely until they were back online,” he said.“As we resolved the original outage, we identified a subsequent issue affecting some calls, including to Triple 0. “In these cases, some people calling Triple 0 received an error message, and their phone would then try to connect to an alternative mobile network. “By 12.30pm on July 9, we had implemented a solution that addressed the issue affecting some calls to Triple 0.”