Pleasure of knowledge(One trivial)All mobile numbers are ten digits??
All mobile numbers are ten digits. What is the technical reason?
In the world due to technical and user base reasons the mobile numbers at present varied from 10 to 11 digits. Due to technical reasons two countries, UK and China moved to 11 digits in mobile phone numbers. In India all mobile numbers have 10 digits under the government’s National Numbering Plan (NNP).
The number of digits in a mobile phone number describe the maximum mobile phones we can have without dialling the country code, that is 91 (for India). If we had a 9 – digit cell number, the maximum number of cell numbers possible would have been 10 {+9} , ie. a maximum of 1000 million or 100 crore subscribers. Since our population is close to 125 crore, obviously we cannot have a 9- digit cell phone number. Adopting a 10– digits cell number offers a capacity to have 10 billion or 1000 crore subscribers and the total population would get at least one mobile number each.
In 2003, the Department of Telecommunication ( DoT) In India had implemented the 10–digit mobile numbers which will meet the needs for 30 long years. On February 2009, India registered a user base of 375.74 million wireless subscribers. 10-digit numbers can cater to an additional 250 million users. Under the current 10-digit numbering scheme, only a maximum of 1 billion mobile numbers can be issued and the mobile phone connections in India would cross this mark in the next couple of years. DoT had previously proposed a transfer of numbers from10 -digits to 11- digits in January 2010.
At present all mobile phone numbers are 10 digits long and the way to split the numbers is defined in the National Numbering Plan 2003 as XXXX – NNNNNN where XXXX is the Network operator, NNNNNN is the subscriber numbers.
DR. SAINUDEEN PATTAZHY
Associate professor
S.N. College, Kollam, Kerala(ref:http://www.thehindu.com/todays-paper/tp-features/tp-sci-tech-and-agri/question-corner/article6399173.ece)
