Flawed software patches from Nokia Siemens Networks have crippled Optus’s 3G mobile network in Brisbane. Since 6.00am yesterday, Optus subscribers in Brisbane suffered from intermittent transmission of data and voice services as Australia’s number two telco battled to reconfigure a recent upgrade to its new 3G software platform. The upgrade, which has been applied to all Optus 3G mobile switches nationwide, was supposed to provide efficiency gains in speed and capacity load. Instead, it triggered three separate network failures which combined to cause chaos for Optus customers in Queensland, NSW, the ACT and Victoria last week. As a result subscribers were left without mobile phone services for about 10 hours
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