Sunday, June 30, the Sprint Nextel iDEN network is being shut down after years of push-to-talk service. Push-to-talk was a popular tool for many blue-collar businesses such as plumbers and construction workers - a single button push put you in direct communication with your co-workers, no need to dial numbers. Over time, though, the technology fell out of favor and the time has come to pull the plug.
ComputerWorldThe iDEN system came from Motorola and formed the basis of Nextel's network, which was begun in 1996. The network ran over spectrum from small regional carriers and frequencies for Motorola's two-way radios. The company built a strong business through its push-to-talk feature, which let users talk to each other instantly without having to first answer a ringing phone.