AT&T Enhanced Push-To-Talk (EPTT) is a next generation PTT service that provides virtually instant voice communications, highly secure messaging and location features over 3G, 4G, 4G LTE and Wi-Fi and serves as a powerful collaboration and productivity tool for businesses and governments.
Zello is the leading push-to-talk voice messaging app for teams and businesses worldwide, turning iOS, Android, and Windows devices into walkie-talkies that also record messages, track location, and send emergency alerts.
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