Q) When was different type’s communication infrastructure established in Nepal?

A) Here is a timeline todate of various communcation infrastructure including the recent fibre optics network connection (courtesey from Wikipidia)

1913 Establishment of first telephone lines in Kathmandu
1914 Establishment of Open wire Trunk Link from Kathmandu to Raxaul (India)
1935 Installation of 25 lines automatic exchange in Royal Palace
1936 Installation of Open Wire Trunk line from Kathmandu to Dhankuta
1950 Establishment of Telegram Service
1950 Introduction to High frequency Radio System (AM)
1950 Establishment of CB telephone exchange (100 lines) in Kathmandu
1951 Installation of Open Wire Trunk line from Kathmandu to Palpa
1955 Distribution of telephone line to general public
1962 First Public Telephone Exchange in Kathmandu (300 lines CB)
1964 Beginning of International Telecommunications Service using HF Radio to India and Pakistan
1965 First Automatic exchange in Nepal (1000 lines in Kathmandu)
1971 Introduction of Telex Services
1974 Microwave transmission links establishment for internal trunk
1982 Establishment of Standard "B" Type Earth Station for international circuits
1982 Establishment of SPC telex exchange
1983 Establishment of digital Telephone Exchange
1984 Commencement of STD service
1984 Reliable Rural Telecom Service (JICA)
1987 Commencement of STD service
1995 Installation of Optical Fiber Network
1996 Conversion of all Transmission link to Digital transmission link
1996 Automation of the entire Telephone Network
1996 Independent Int. Gateway Exchange established
1996 Introduction of VSAT services
1997 Digital Link with D.O.T. India through Optical Fiber in Birgunj - Raxual
1998 Direct Link with Bangladesh
1999 Launching of GSM Mobile service
2000 Implementation of SDH Microwave Radio
2000 Launching of Internet Service
2001 Launching of Payphone Service
2002 East West Highway Optical Fiber Project
2003 GSM Prepaid Service
2004 NEPAL TELECOM (Transformation from Corporation to Nepal Doorsanchar Company Limited)
2004 Pre-paid Calling Card Service (IN Services)
2005 Soft launch of CDMA
2005 Access Network Services
2005 Outsourcing of Enquiry Service (197)
2006 PSTN Credit Limit Service - PCL (IN)
2006 Home Country Direct Service - NepalDirect (IN)
2006 MCC (198) Complaint Registration via IVR in Kathmandu Valley
2006 CDMA Limited Servies in Kathmandu Valley
2007 Expansion of Internet Bandwidth through India-Nepal cross boarder optical link.
2007 National Roaming for CDMA Mobile (Sky Phone)