NEW YORK -- Sprint Nextel Corp. will start shutting down the Nextel part of its network in little more than a year. So what are the folks who use Nextel's walkie-talkie-like push-to-talk function ...

Remember when Nextel revolutionized business communications? Today’s Push-to-Talk over Cellular (PoC) provides nationwide individual and group calling and GPS location-based dispatching using existing ...

T-Mobile has revealed that it will launch its Mission Critical Push-to-Talk (MCPTT) this month. The carrier didn't give an exact launch date, but said the service will go live in April. The MCPTT will ...

Sacramento, California — Plum Wireless, under the new ownership of Rivus Interactive Group, has announced the highly anticipated return of Global Push-to-Talk (PTT) services, marking the first major ...