ISDN Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

ISDN Interview Questions

Questions Answers Views Company eMail

What item of equipment would be required to connect a modem to ISDN? A terminal adapter.

ITI,

1283

What is the name of the reference point that is located on the user side of an NT1?

1 1722

Does the network provider supply the NT1 in North America?

1 1729

In order to be able to plug analogue devices into sockets on an NT1, what extra item of equipment would need to be included within the the NT1?

1 1704

What are these types of NT1 known as?

1 1748

How many devices can be connected to a standard BRI line?

1 1657

What are the two ISDN device addressing methods? The two types of device addressing in ISDN are known as:

1 1657

A device is configured for automatic TEI. What is its address immediately after being switched on - before it starts communicating with the network?

1 1696

In practice, what is the maximum number of devices that may be connected to a BRI which expects a fixed TEI?

1 1633

What is the significance of the TEI in B channel communication?

1 1726

What address does an ISDN PRI line always use?

1 1820

Why does there need to be a broadcast TEI?

1 1736

What channel do the call management messages use?

1 1607

What channel does the end-to-end connection use?

1 1747

What is the initial call request message called?

1 1811

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Un-Answered Questions { ISDN }

Why use ISDN?

1102

How ISDN allows multiple devices to share a single line?

1440

What is Soft-fax and Soft-modem?

1417

Do you know what is the difference between internet and isdn and is both are same or is there any specific difference?

618

How configuration errors in the ISPBX can prevent successful connections?

983

What is 2B1Q?

1260

What the B and D channels do?

1189

How Analogue fax and modem over ISDN?

1015

How to Establish the Link Layer?

1050

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

1129

What happens when a call is set up?

1102

What is ISDN's history?

1122

What is LAP-D?

1075

How ISDNs are connected together?

1230

What do the layers look like?

1168

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