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Hello, and welcome to Open USB FXS!

What is Open USB FXS?

Open USB FXS is what its name says: an open (open-hardware, open-firmware, open-software, open-documentation) FXS design that connects to your computer over USB. FXS stands for “Foreign eXchange Subscriber” and is the side of a telephone subscriber line to which a phone set, a fax or an analog PBX is connected. In other words, Open USB FXS lets you connect an analog phone or other such device to your computer over USB.

Open USB FXS works under Asterisk through a Dahdi-compatible device driver. Thus, in order to use it, you must run Linux on your computer and have Asterisk installed. Open USB FXS has been tested with Asterisk versions 1.4.x and 1.6.x and with Dahdi versions 2.2.x, 2.3.x and 2.4.x. Linux kernels tested range from 2.6.26 to 2.6.36 (on kernels older or newer than this, the driver may not compile).



2 Responses to “About-new”

  1. Yannis Says:

    Angele, you have my deepest respect for the work you’ve done and the pain you’ve gone through to achieve it.

    I have some electronics background, made etched PCB since 14 years old, programmed microchips in raw assembly for 5 years and I always had it in the back of my mind to create exactly the project you did. But rest assured I wouldn’t even have got to one third of what you did as I have limited C language skills and absolutely no insight to kernel driver programming.

    Is the project alive? I see you started on an FXO dongle but not much update since a year there either.

  2. Angelos Varvitsiotis Says:

    Hi Yanni,

    Thank you very much for your comment and for your nice words. I apologize for not replying earlier: the blog is not really very active lately, and neither the project itself is. It is not dead though, in the sense that if you find a bug, I will try to fix it and if you come up with a really nice – and doable – idea, I will try to fit it in the project. And, as you can see from my replies on this blog, I will try to provide all the help I can to help you build and use your own board, in case you decide to put your hands on one. So, the correct statement would be that the project is alive but inactive.

    It’s true that I have started another project on an FXO dongle, however I have been unable to put into that new FXO project the amount of resources required for it to take off. I will appreciate every help in that, if you want to contribute (and that’s fine if you don’t :-)).

    Thanks again for your comment!



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