What is
STD full form
ISD full form
PCO full form
Where are these terms used?
Answer
259.7k+ views
STD full form is Subscriber Trunk Dialling
ISD full form is International Subscriber Dialling
PCO full form is Public Call Office
The terms STD ISD PCO are used in the telephone system. They allow subscribers to dial trunk calls without operator assistance through trunk lines.
Last updated date: 31st May 2023
•
Total views: 259.7k
•
Views today: 4.24k
Recently Updated Pages
An open pipe is in resonance in 2nd harmonic with frequency class 11 physics CBSE

Find dfracddxcos 1 x22 1 2x1 x2sin 1 x22 2 4x1 x2sin class 11 maths CBSE

If left sqrt 5 + sqrt 3i right33 249z then modulus class 11 maths CBSE

The maximum value of fx sin x1 + cos x A 3dfracsqrt class 11 maths CBSE

The moment of inertia of a circular ring of mass M class 11 physics CBSE

Can a diamond conduct electricity class 11 chemistry CBSE

Trending doubts
What was the capital of Kanishka A Mathura B Purushapura class 7 social studies CBSE

Difference Between Plant Cell and Animal Cell

Write an application to the principal requesting five class 10 english CBSE

Ray optics is valid when characteristic dimensions class 12 physics CBSE

Give 10 examples for herbs , shrubs , climbers , creepers

Tropic of Cancer passes through how many states? Name them.

Write the 6 fundamental rights of India and explain in detail

Write a letter to the principal requesting him to grant class 10 english CBSE

Name the Largest and the Smallest Cell in the Human Body ?
