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Asterisk Breeds A Cottage Industry
gardel writes "The open-source PBX is popular, powerful and affordable. But setting up and maintaining Asterisk in its distributed form is a technical challenge for even the most accomplished of geeks. Now, Voxilla reports, several new companies (more than 60, at last count), smelling a good business opportunity, offer simplified graphical front-ends for Asterisk. And more are on the way."
It is primarily used for voip, actually, though handles leased lines (T1, E1, etc) perfectly well with supported hardware. Everything form $20 pots cards so you can use it as an answering machine at home to multiple T1 cards are supported... and lots of voip.
You can do everything with it, but configuration is a lot of text files in true unix fashion.. it's more of a framework than a completed solution... which is what the article is about.. asterisk is really powerful, but setting up a complicated setup is sort of, well, complicated (though I find the complexity is about right for the level of flexibility)
Asterisk is a FOSS PBX (private branch exchange) and Voice over IP gateway. The PBX part means that you have phones on your desks that don't connect to the real phone lines unless you want to dial out of the company. The VOIP gateway means that it can talk to SIP and H323 systems, as well as having its own protocol, IAX. Most of the useful features require extra hardware, called FXO and FXS cards. These cards allow it to talk to the phone company lines and to talk to the phones on the desk. Without the extra hardware, you just have a computer that can talk to software phones and take voice mail. You cannot just use regular modems. It is very flexible, and if you have two or three offices, it can save you long distance charges by routing those calls over the internet. This is just a basic idea of what it can do, it what Asterisk is used for. Check out "Asterisk at home" for a fairly simple installation that includes a good web interface.