What is ISDN's history?

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More ISDN Interview Questions

How users are connected to a public ISDN through an ISPBX?

Why use ISDN?

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What is the essential difference between ISDN and the ordinary telephone system (PSTN)?

What are the two types of equipment that can be used on ISDN called?

A user on an ISPBX can use different D-Channel protocols to those in use by the public ISDN network connected to the ISPBX - true or false?

Why can you not normally send data between users through the D channel?

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What other method is there for converting synchronous and asynchronous data?

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