1) DSL stands for Digital Subscriber lines then why analog data pass from wires or lines????
2) Is there modem necessary for analog to digital converter in DSL connection?|||Modem means modulation and demodulation. An analog signal in the form of a carrier wave is modulated using the digital signal and send out through the phone line. The incoming analog signal is processed to extract the digital signal from the incoming analog signal. What is really transmitted is an analog signal but it contains the digital signal which needs to be separated before it can be used meaningfully.|||For most home phone connections, the final link to the handset is analog.
The traffic out on the public phone system is digital. The modem makes the conversion. It can be in your home or belong to the carrier... so it's necessary, but that doesn't mean it's in your house.
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