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Azetti PTT on Android with SAVOX PROMATE BTH-101 Bluetooth handsfree and SAVOX PROMATE BTR-155 RSM
Android Push to Talk client from Azetti Networks
Walkie Talkie PTT Phone - 3G on AT&T/T-Mobile
BlackBerry 10 and Kyocera with Push to talk PTT app from Azetti
AT&T Enhanced Push To Talk: A Guided Tour | Pocketnow
Smart Walkie Device Demo
PTT Dispatcher for Apple's Mac OS X
Turn your phone into a Walkie Talkie