Transcription: Most modems have signal lights which tell you what's happening inside your modem. The MR light means the modem is turned on and ready to go to work. The OH light means the phone line is off hook. The CD light means that the modem has detected a carrier signal. In other words, you've successfully reached another computer. The HS light means your modem is operating at its highest speed. The TR light means that your PC, also called a terminal, is ready to work with the data. The SD light flashes each time your PC and modem send data. The RD light flashes each time you receive data. AA stands for ...
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