UNIT 3 : TELEPHONY AND MOBILE COMMUNICATION



UNIT 3

TELEPHONY AND MOBILE COMMUNICATION


SHORT ANSWER QUESTIONS 

1)  Classification of switching system ?

2)  Advantages of electronic telephony over manual telephony ?

3)  Compare in-band & out-band signaling ?

4)   Compare between Pulse & DTMF dialing ?

5)   Limitations of Conventional mobile phone system ?

6)   Short note on evolution of cellular mobile communication system ?

7)   Drawbacks of 3Gmobile communication system ?

8)   Function of mobile switching station ?

9)   Define voice and control channels in mobile communication ?

10)   Define MS, BS , BTS , BSC , MSC ?

11) Short note on pulse dialing & DTMF dialing ?


ESSAY TYPE QUESTIONS 

1) 1)  (a) Explain PULSE & DTMF Dialing?

    (b) Compare PULSE & DTMF Dialing?

2) (a) Evolution of cellular mobile communication system?

    (b) Define Mobile station, Base station , BTS , BSC , MSC ?

3) (a) State the functions of MSC ?

    (b) Define        i) Voice channel     (a) Forward  (b) Reverse

                            ii) Control channel (a) Forward  (b) Reverse

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