chmac: voip

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  1. http://www.ipkall.com/
    Offers free incoming Washington state SIP based numbers. Apparently their revenue model is the ~1c termination fees they make. No customer service is provided. Interesting.
  2. http://www.asterisk.org/
    An open source PBX based on Linux used as a building block in most voice on linux systems.
  3. http://www.star2billing.com/
    The commercial arm of a2billing, offering installation, support, and hosting.
  4. http://www.asterisk2billing.org/
    a2billing is built on top of Asterisk and handles all kinds of billing requirements. Prepaid calling cards, post-paid, CLI authenticated, etc, etc. Very powerful. Commercial support available.
  5. http://gizmo5.com/pc/opensky/
    OpenSky is a voip to skype link, provided for free by Gizmo. Supports calls and chat (I think) but probably not video. Very interesting...
  6. http://www.mobivox.com/
    Mobivox allows you to dial a local number and be connected to a long distance or international number for free or cheaply.

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