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All materials to evaluate Yeastar as a PBX vendor on products, solutions, partner program, support, learning resources, etc.
Joshua Farrow
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Thanks again for your help. I'm showing black as ground and the other three colors as 3v. Do you know which lines should be Tx and Rx?
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Chris, thank you very much for taking time to send me this info. I found two locations on this mainboard that appear to possibly be the serial interface. However, neither are outputting any data....