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Signalling CAS Part-1

Authored by Saji J.B.

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Professional Development

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Signalling CAS Part-1
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20 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

In PSTN network, when the subscriber is idle the line impedance is ........

High

Low

Medium

None

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

When the subscriber lifts the hand set the line current ..........

Increases

Decreases

Does not change

None

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

The duration of the release signal is more than .....

250 milli seconds

500 milli seconds

320 milli seconds

200 milli seconds

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Which one of the following is NOT a Calling Subscriber Line Signaling ?

Answer back signal

Permanent Line Signal

Address Signal

Ringing Signal

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Ring back tone is fed back to the calling subscriber by

Originating Exchange

Terminating Exchange

Originating Exchange or Terminating exchange

None

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

The duration of the Register Recall Signal is ........

100 to 120 milli seconds

220 to 300 milliseconds

200 to 320 milli seconds

250 to 500 milliseconds

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Register Recall Signal is a ......

Called Subscriber Line Signaling

Calling Subscriber Line Signaling

Channel Associated Signaling

Common Channel Signaling

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