Push to Talk (PTT) is a wireless technology that enables peer to peer communications similarly to a walkie-talkie. Do you remember or ever used one? Personally, I remember it as a toy when you receive the walkie-talkie for Christmas for example. Actually they’re initial wireless communications, replacing the rudimentary system made of two plastic glasses and a thread, which could represent our wired communications toy. PTT is normally a half-duplex (one way) system that allows instant communications between systems, using the carrier’s packet network (actually a VoIP solution is one of the alternatives). It means that you’re only allowed to talk when no one else is doing so, and while pressing the button of your terminal. After all the fancy cell phones with new capabilities that flood the market, don’t you think that this service is like coming back some years ago to ages where you couldn’t contact your friends when they were out of their homes? Anyway PTT is working and it has already been launched in different countries.
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