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What Is the Advantage of STD Telephone System?

FAQs Jackson Bowman July 24, 2022

Trunk selection of the subscriber

Subscriber Trunk Dialing
Subscriber Trunk Dialing (STD), also known as subscriber toll dialing, is a dialing plan feature and telecommunications technology for dialing trunk calls by telephone subscribers without the assistance of Operators.
https://en.wikipedia.org › wiki › Subscriber_trunk_dialling

(STD) also known as Subscriber Billing is a telephone system , which allows subscribers to make long-distance calls without the assistance of an operator. It is useful because it can be selected directly without resorting to operators.

What does STD mean in telephone?

Subscriber Trunk Dialing (STD), also known as subscriber toll dialing, is a dialing plan and telecommunications technology for dialing trunk calls by telephone subscribers without the assistance of attendants.

What is STD facility?

Note: The term STD (Subscriber Trunk Dialing) refers to the telephone network facility that allows a subscriber to dial trunk calls without the interference of a service provider.

Why do we use STD codes?

Subscriber’s trunk dialing or STD code is four or more digits that allow subscribers to dial landline numbers without a carrier. Every country, state, city, town and region has a special STD code that can be used to communicate by dialing the landline numbers and adding an STD code.

What is the difference between STD and ISD?

ISD (International Subscriber Dialling) for international calls, STD (Subscriber’s Trunk Dialing) for long distance calls and PCO (Public Call Office) for local calls.

What is difference between local and STD calls?

Until now, there has been a discrepancy between local calling rates within a given telecom circuit and long distance (STD) calling rates across the country. Long distance (STD) calls are higher than local calls.

What is STD full form?

Sexually Transmitted Diseases (STDs) – or Sexually Transmitted Infections (STIs) – are generally acquired through sexual contact. The bacteria, viruses, or parasites that cause sexually transmitted diseases can be transmitted from person to person through blood, semen, or vaginal and other bodily fluids.

How many villages are covered with STD telephone facility in India?

Solution: More than two-thirds of villages in India are already covered with STD (Subscriber Trunk Dialing) telephone systems.

How can I make a mobile call from STD?

Mobile and landline users can now dial STD numbers without using 0 or +91 as a prefix, following the implementation of an executive order from the Department of Telecommunications (DoT) of leading telecom companies. The move is an important step towards full Mobile Number Portability (MNP).

How do you write phone number for STD?

STD codes are either 4, 3 or 2 digits. For example, all major cities have a two-digit area/STD code and an eight-digit phone number. Currently, 2-digit STD codes (also known as area or trunk codes) are 11, 20, 22, 33, 40, 44, 79, 80. The first digit in the subscriber number is not 0, 1, 7, 8, and 9 .

When did STD codes start?

STD codes were introduced in 1958 and were fully adopted by 1979, negating the need for a switchboard. Initially, STD codes were derived from the first 2 letters of a place name.

What is ISD phone?

The full form of ISD is International Subscriber Dialing. Also known as IDD (International Direct Dialing), ISD is an international telephone call dialed directly by a telephone subscriber or individual rather than depending on the telephone operator.

When did STD calls start in India?

The very first STD (Long Distance Subscriber Trunk Dialing) call in India was made in 1960 between the cities of Kanpur and Lucknow.

What is STD ISD and PCO?

STD ist Subscriber Trunk Dialing ISD ist International Subscriber Dialing PCO ist Public Call Office.

References:

  1. https://en.wikipedia.org/wiki/Subscriber_trunk_dialling
  2. https://www.vedantu.com/question-answer/std-and-isd-are-associated-with-a-telephone-class-10-social-science-cbse-5ff7b6fa1eb9072eb8e00714
  3. https://www.indiatoday.in/information/story/list-of-std-codes-of-states-and-union-territories-in-india-1862016-2021-10-07
  4. https://www.linkedin.com/pulse/death-isd-std-pco-short-lived-industrial-revolution-banerjee
  5. https://economictimes.indiatimes.com/can-i-make-std-calls-on-local-rate/articleshow/1159095.cms
  6. https://www.mayoclinic.org/diseases-conditions/sexually-transmitted-diseases-stds/symptoms-causes/syc-20351240
  7. https://www.doubtnut.com/qa-hindi/643155176
  8. https://www.businesstoday.in/industry/telecom/story/mobile-number-portability-dial-std-numbers-without-0-or-91-49213-2015-05-21
  9. https://www.immihelp.com/phone-numbering-scheme-in-india/
  10. https://www.numbersupermarket.co.uk/history-01-numbers/
  11. https://byjus.com/full-form/isd-full-form/
  12. https://en.wikipedia.org/wiki/Telephone_numbers_in_India
  13. https://commons.wikimedia.org/wiki/File:STD_ISD_PCO_Indian_telephone.jpg

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