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  2. Nextel - Wikipedia

    en.wikipedia.org/wiki/NEXTEL

    Nextel was the first company to implement a nationwide push-to-talk system similar to a walkie-talkie, marketed as DirectConnect. Unlike other cellular networks, the Nextel network operated in the Specialized Mobile Radio band, and Nextel was one of the first providers in the United States to offer a national digital cellular coverage footprint.

  3. Zello - Wikipedia

    en.wikipedia.org/wiki/Zello

    Zello is a tech software company in Austin, Texas, U.S., known for the Zello app, which emulates push-to-talk (PTT) walkie-talkies over cell phone networks. History [ edit ]

  4. Sprint Extends Push-to-Talk Capabilities to More Phones ... - AOL

    www.aol.com/news/2012-10-24-sprint-extends-push...

    Sprint Direct Connect Now, based on Qualcomm Inc.'s proven push-to-talk technology platform, effectively extends Sprint's growing push-to-talk franchise - with more than 1 million Sprint Direct ...

  5. Boost Mobile - Wikipedia

    en.wikipedia.org/wiki/Boost_Mobile

    Using Nextel's iDEN network, Boost Mobile offered an unlimited push-to-talk service, marketed as only costing a dollar a day, at a time when cellphone plans offering unlimited talk were still rare. The service was initially exclusive to markets in areas of California and Nevada and was marketed towards urban minorities, often using urban slang ...

  6. Push-to-talk - Wikipedia

    en.wikipedia.org/wiki/Push-to-talk

    Push-to-talk (PTT), also known as press-to-transmit, is a method of having conversations or talking on half-duplex communication lines, including two-way radio, using a momentary button to switch from voice reception mode to transmit mode.

  7. TalkBox Voice Messenger - Wikipedia

    en.wikipedia.org/wiki/TalkBox_Voice_Messenger

    Talkbox Messenger (formerly named TalkBox and Talkbox Voice Messenger) is a smartphone application that enables users of iPhone, Android, Windows Phone and BlackBerry to easily communicate via push-to-talk instant voice messages as well as sharing geo-location, pictures and group chat with one another. [1]

  8. Comparison of VoIP software - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_VoIP_software

    This is a comparison of voice over IP (VoIP) software that examines applications and systems used for conducting voice and multimedia communications across Internet Protocol (IP) networks. VoIP technology has transformed telecommunications by offering alternatives to traditional telephony systems while providing enhanced features and cost savings.

  9. PoC radio - Wikipedia

    en.wikipedia.org/wiki/PoC_radio

    A PoC radio (short for push to talk over cellular radio [2]), also known as PTToC radio, [3] is an instant communication device that is based on the cellular network. [4] It is a radio device that incorporates push-to-talk technology into a cellular radio handset. [5]