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,

1452

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

1 1985

Does the network provider supply the NT1 in North America?

1 2012

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 1972

What are these types of NT1 known as?

1 2070

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

1 1990

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

1 1974

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

1 2061

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

1 1875

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

1 2040

What address does an ISDN PRI line always use?

1 2111

Why does there need to be a broadcast TEI?

1 2042

What channel do the call management messages use?

1 1942

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

1 2073

What is the initial call request message called?

1 2124

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Un-Answered Questions { ISDN }

What are SAPIs?

1325

How configuration errors in the ISPBX can prevent successful connections?

1239

How to Establish the Link Layer?

1253

How ISDN allows multiple devices to share a single line?

1630

What is LAP-D?

1275

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

805

Explain the call flow in nss and what is sri signal?

843

Bearer Capabilities - What are they?

1306

How the structures of BRI and PRI compare

1597

How ISDNs are connected together?

1421

How Analogue fax and modem over ISDN?

1193

What is Fractional PRI?

1377

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

1330

How the B and D channels share the line?

1276

What is 2B1Q?

1448

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