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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

    Purpose-built to connect frontline teams and communities, the push-to-talk walkie-talkie app offers instant voice communication with one or many in unlimited secure, private channels, as well as message replay, emergency alerts, location tracking, dispatch capabilities, and Bluetooth device support.

  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. 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.

  6. Over-the-air update - Wikipedia

    en.wikipedia.org/wiki/Over-the-air_update

    An over-the-air update (or OTA update), also known as over-the-air programming (or OTA programming), [1] is an update to an embedded system that is delivered through a wireless network, such as Wi-Fi or a cellular network. [2] [3] [4] These embedded systems include mobile phones, tablets, set-top boxes, cars and telecommunications equipment.

  7. 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]

  8. IDT Corporation - Wikipedia

    en.wikipedia.org/wiki/IDT_Corporation

    On July 31, 2013, IDT spun off Straight Path, a communications asset company holding 39 GHz (millimeter wave) nationwide spectrum and on average, 800 MHz of bandwidth in top 30 US markets. [20] In October 2014, IDT sold Fabrix Systems, an Israel-based software company that developed and licenses a proprietary cloud based storage and computing ...

  9. Talk:Push-to-talk - Wikipedia

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

    If "lower call costs" were the main issue, cellular carriers would hardly offer push to talk services. So ability to talk instantly to one or many people with very easy-to-understand user interaction, which is known from walkie-talkies, enables new forms of mobile communication. However, the walkie-talkie analogy breaks down fast.