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« Need for speed: Wireless auto tachometer | Main | Gadget Master Halloween Special »

Build your own 89C51 PABX

This 89C51 PABX project is basically an eight line intercom from which you can call one to eight numbers.

The 89C51 PABX system also supports dialling and receiving telephone calls.

Link includes full circuit schematic.

dial1.JPG

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Posted by Robert Kotevski on October 29, 2007 8:00 AM



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