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Asterisk Connecting to the Cellular Network

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chan_celliax

Celliax is a GPL channel driver for Asterisk, chan_celliax.

  • runs on Windows and Linux
  • manages GSM and CDMA cellular phones through an adapter, composed by a serial data cable (for commands) and an audio cable (for the voice) interfacing the computer soundcard
  • Celliax is also capable of making and receiving Skype calls through the cellphone, and has an app like app_directory that let you choose which one of your Skype contacts you want to call.
  • on Linux, Celliax can also manage ALSA voice modems (without Skype support)
  • on Windows and Linux (and *BSD) manages virtually all kind of cellular phones, both old Nokia models (with proprietary Nokia FBUS2 commands) and cellphones supporting AT commands (also with Motorola extensions)
  • with Celliax is distributed the Celliax LiveCD, with a working installation of Asterisk, chan_celliax, and configuration utilities, based on Knoppix. The Celliax LiveCD contains also all is needed to run Celliax on Windows: the cygwin installer and the tgz with the asterisk-celliax stuff to be untarred in a basic cygwin installation.
  • Headless Celliax, cellphones, Asterisk and Skype (without X)! Booting the LiveCD in console mode you find a script (/usr/local/asterisk/usr/sbin/celliax_server) that automatically launch Xvfb (the fake X11 server), Skype and Celliax. Also via ssh! Isn’t that cute?

Example: Siemens mobile phone

German forum: Build your own cable for chan_celliax

Details

Some notes on connecting asterisk to the cellular network. Why?

  • Leverage free mobile to mobile calling to lower costs.
  • SMS gateway (See note).
  • Mobile applications; geo-location tracking or theft prevention for example
  • Remote monitoring
  • Mobile Machine to Mobile Machine so-called M2M

The cellular-capable device you attach might be.

  • A regular cell phone
    • Via some homebrew adaptor
      • USB, Bluetooth, etc
      • Analogue patch cables to sound card
    • Via some commercial cell to traditional phone adaptor
      • Note that one of these has a serial line controller option
  • A PCMCIA cellular card
    • More homebrew to get the analogue connection
  • A “Fixed Cellular Terminal” – i.e. a device intended for this.
  • A PCI wildcard with GSM modules, with the proper software

See also:

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