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iDEN (Integrated Digital Enhanced Network)
iDEN (Integrated Digital Enhanced Network) is a mobile telecommunications technology, created by Motorola, which gives its users the advantages of a trunked radio and a cell phone. It was known as the first mobile social network by numerous tecnology industry analysts. iDEN puts more clients in a given spectral space, contrasted with analog cell and two-way radio systems, by utilizing speech compression and time division multiple access (TDMA).
The advantage of iDEN is the Push To Talk system, which allows mobile phones to be used as walkie talkies.