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First telephone number are just name Depending on exchanges size, two, three or four digit numbers assigned to subscribers, Two letter prefix codes assigned to four digit number (Circa 1928 to 1958) In larger cities three letter prefix codes assigned to four digit number (Post WWII) Seven digit, all number dialing begins phase in. (1958) Nearly all of North American telephone network converted to all number dialing (1985) Some party lines remain, with single digit like Rodeo Creek Number 8Telephone answering service, answering phone calls, answering business phone calls, business phone call, business phone answering, phone answering, phone messaging service.
Bharat Sanchar Nigam Limited (known as BSNL) is a public sector communications company in India. Its headquarters are at Statesman House, Barakhamba Road, New Delhi. It has a status of Mini Ratna - a status assigned to reputed Public Sector companies in India.
The BSNL foundation of Telecom Networks in India was laid by the British sometime in 19th century. The history of BSNL is linked with the beginning of Telecom in India. In 19th century and for almost entire 20th century, the Telecom in India was operated as a Government of India wing. Earlier it was part of erstwhile Post & Telegraphs Department (P&T).
In 1975 the Department of Telecom (DoT) was separated from P&T. DoT was resposnsible for running of Telecom services in entire country until 1985 when Mahanagar Telephone Nigam Limited (MTNL) was carved out of DoT to run the telecom services of Delhi and Mumbai. It is a well known fact that BSNL was carved out of Department of Telecom to provide level playing field to private telecoms.Subsequently in 1990s the telecoms sector was opened up by the Government for Private investment, therefore it became necessary to separate the Government's policy wing from Operations wing. The Government of India corporatised the operations wing of DoT on October 01, 2000 and named it as Bharat Sanchar Nigam Limited (BSNL).BSNL operates as a public sectors.