USB to COM port cable Schematic

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 Question by moin din posted 03 Dec 2005
 USB to COM port cable Schematic
i am using a wireless phone set in which the wireless modem is built in.and a com port female connector is available on my phone set.iwant to connect this com port to the usb port of my computer.please tell me the schematic diagram of USB to SERIAL cable because i want to make yhis cable myself.
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 Answer by Joseph Golan posted 05 Dec 2005
Dear moin,

You are mixing signals here and could end up damaging either your telephone and/or computer.

From what you are describing, you must go to a modem in your computer from the telephone. I would highly recommend that you consult the technical documentation that came with the telephone for the proper connections.

Sincerely,
Joseph Golan, RCDD

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