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Explain the working of ISDN
Stands for Integrated Services Digital Network. It is a way to move more data over existing regular phone lines. ISDN is rapidly becoming available to almost every country, and everyone who needs it, at desired data transfer rates. In most countries it is available at a price comparable to standard analog phone line connectivity. It can provide speeds of roughly 128 kilobits per second (kbps) over regular phone lines.
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