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Telephone Switching System

Telephone Switching SystemI want to build a telephone switching system to 20 exchanges?

I want to do a project on the telephone to the wireless cellular network. Please tell me the books and websites, or any some other info about this ASAP

How likely do you think he is an engineer who would be suspended in Yahoo Answers to design a system stack for 160.000 subscribers?

Start with a manufacturer and show them the color of your money first.

Posted on April 3, 2010.
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