JJ

1.

When was the first complete sentence ever transmitted by the telephone telephone??

a.

1860

b.

1876

c.

1892

d.

1905

2.

Who invented the first practical system for the electrical switchin of calls installed in 1892?

a.

!ell

b.

Watson

c.

"dison

d.

#trower

$.

What part of the conventional telephone set the transmitter and receiver %nit are located?

a.

&ial

b.

!ase

c.

'eypad

d.

(andset

).

*he type of transmitter widely %sed in the conventional telephone set

a.

+arbon

b.

+eramic

c.

,ie-oelectric

d.

"lectromanetic

5.

Who invented the first carbon type transmitter?

a.

!ell

b.

Watson

c.

ray

d.

"dison

6.

*he type of receiver widely %sed in the conventional telephone set

a.

"lectromanetic

b.

+eramic

c.

+arbon

d.

,ie-oelectric

7.

(ow many %ni/%e tones are %sed for the 12ey dialtone m%lti fre/%ency eypad?

a.

2

b.

)

c.

7

d.

12

8.

n the telephone %nit3 what is prod%ced when the balancin networ in a hybrid circ%it is intentionally %nbalanced slihtly so that the small amo%nt of transmitted sinal is fed to the receiver of the talin phone?

a.

&ial tone

b.

#ide tone

c.

"cho

d.

#inin

9.

*he type of dialin possible for telephone set with rotary dial.

a.

*one dialin

b.

,%lse dialin

c.

4oop dialin

d.

em dialin

10. &* stands for a.

&iital telephone m%ltimode f%nction

b.

&%al tone m%ltifre/%ency

c.

&ialin time made faster

d.

&ata transmission m%ltiple filter

11. *he sinal heard on the telephone line that indicates readiness of the central office in receivin address or telephone n%mber a.

&ial tone

b.

inin tone

c.

!%sy tone

d.

+onestion tone

12. *he sinal heard on the telephone line which indicates that the called s%bscriber s%bscriber sets  sets is in %se a.

&ial tone

b.

inin tone

c.

!%sy tone

d.

+onestion tone

1$. &ial tone3 b%sy tone and rin bac tone are eamples of ::::: sinal.

a.

#%pervision

b.

;ddress

c.

%sical

d.

&iital

1). e/%est for service from the telephone is detected at the +entral ip code

b.

;rea code

c.

"chane code

d.

+o%ntry code

$2. *he three diits followin the area code a.

>ip code

b.

!ar code

c.

"chane code

d.

+o%ntry code

$$. enerically refers to any switchin system owner or leased by a b%siness or orani-ation to provide both internal switchin f%nction and access to the ,#*= a.

,rivate branch echane

b.

,%blic telephone carrier

c.

4ocal echane carrier

d.

nterechane carrier

$). *he point where sinals are conveyed from one telecomm%nication networ of a telecom operator to another a.

,oint of interconnection

b.

#inal transfer point

c.