Cellular Phone Monitoring Made EZ!
In light of the recent cellular phone monitoring discussions: check out the most recent issue of _2600_, Spring 1994. It has a product review for the "Cellular Telephone Experimenters Kit", $125 from Network Wizards in Menlo Park, CA. Given this kit and a OKI-900 cellular phone ($450 new, $300 used), you can do wonderous things. The kit connects to the phone and a standard PC RS-232 port, and lets you control the phone via your computer and do all sorts of things. The kit comes with a C API for controlling the phone, so you're not limited by what software comes with the kit. The author of the article listed these things that he programmed in a day or so: * Scan for a paging channel and display the messages. If a voice channel is assigned, go to that channel and listen to the call. * Scan for voice channels and listen to active channels. * Scan OMNICELL channels and listen to active channels. * While listening to a call, display the voice channel messages. * Automatically follow handoffs. * Decode DTMF, change the volume or audio source. * Automatically mute the audio and stop monitoring when the call is released. Possible things he said you could do with more time: * Log all messages and call information for certain cellular phone numbers. You could log paging channel messages, calls places and recieved, call durations, DTMF digits dialed, cell channels used, etc. * Create a "spectrum" display of the cellular band by scanning all channels and recording the signal strength. * With a map of cell sites in your area, physically track a phone as it moves from cell to cell. The article is interesting in itself. Check it out. Spring 94 issue of _2600_. I'm typing in the article for a friend, so I'll mail it to anyone who wants a copy.... -------------------------------------------------------------------------- Michael Brandt Handler <grendel@netaxs.com> Philadelphia, PA PGP v2.6 public key on request Boycott PSI, Inc. & Canter & Siegel <<NSA>> 1984: We're Behind Schedule
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Michael Handler