Freest Phone call ever?

Li Yuqian (Beijing, China) and I (Adelaide, South Australia) just made the first IP04 to IP04 phone call. We used IAX2 and a GSM codec and it sounded just fine. On January 15 2007, Wojtek Tryc (Ottawa, Canada) and Dimitar Penev (Sofia, Bulgaria) from the BlackfinOne community made a phone call using a BlackfinOne and 4fx combination. Could these be the freest (as in speech) phone calls ever?

  1. Open source Asterisk software was used.
  2. The operating system was uClinux.
  3. The hardware designs are open and free for anyone to use.
  4. The hardware was designed using open source gEDA tools.
  5. We used VOIP so the call cost was approximately zero.
  6. Each IP04 cost us less than $200 to build, way cheaper than any other comparable IP-PBX.
  7. Both Li and I hand assembled (as in soldered) the IP04 hardware ourselves. This has nothing to do with the call being free. It’s just cool :-)

Hmm, maybe we should have used Speex. That would have been even freer than GSM!

So it occurred to me that Li, myself, and the BlackfinOne community may have been making the most open phone calls ever. Even the inventor of the telephone Alexander Graham Bell was very wrapped up in 19th century patent wars over his hardware!

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4 thoughts on “Freest Phone call ever?”

  1. David,

    Good done, I’ve soldered all the components to IP04 board, but have not tested it yet. I hope we can make a phone call by IP04 soon.

    Regards,
    ZhangZQ

  2. Mr Rowe,

    This is Yang a Chinese living in Prague,Czech Rep. could you please refer me to Li Yuqian in Bejing. As I would like to consult him with some questions regarding embed open source IP PBX.
    I have left China more then 7 yeas, he might give me some
    interesting info in China

    thanks

    Yang

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