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OpenBTS is an implementation of the GSM air interface (Um) that allows cellular handsets to be used directly as SIP endpoints. It uses the USRP for its radio interface and Asterisk or FreeSWITCH as its network interface.

Project Reviews

  • Thumbs up

    It is an important step

    posted by anonymous 98 days ago
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  • Thumbs up

    great soft, ideal choice for understanding GSM!

    posted by anonymous 81 days ago
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  • Thumbs up

    this will help deploy DIY GSM antennas in developing countries

    posted by Jonathan Schroder 4 days ago
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  • Thumbs up

    great tool for understanding GSM networks

    posted by anonymous 86 days ago
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  • Thumbs up

    Has cleared the GSM telephonic concept in a precise manner ...THANKS

    posted by RAVI SHANKAR 35 days ago
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