How does Sri Lanka get Internet ?

Hi folks,
By doing so research I found some nice articles and data sources regarding how Sri Lanka gets Internet through submarine communication cables (obviously :D).

What is a submarine communication cable ?
A submarine communications cable is a cable laid on the sea bed between land-based stations to carry telecommunication signals across stretches of ocean. The first submarine communications cables, laid in the 1850s, carried telegraphy traffic.


Source : https://en.wikipedia.org/wiki/Submarine_communications_cable

The complete submarine cable map can be found in http://www.submarinecablemap.com/

Now in Sri Lanka there are several major Internet providers such as SLT, Dialog, Airtel and etc...
Primarily there are 2 major submarine cables which provides Internet to Sri Lanka.

1. Bay of Bengal Gateway (BBG) -  Dialog
2. SEA-ME-WE 3 - SLT

And the landing point of most of the cables is Mount Lavinia. Following map illustrates the landing point of submarine cables in Sri Lanka.http://www.submarinecablemap.com/#/landing-point/mt-lavinia-sri-lanka
 
Bay of Bengal Gateway (BBG) 

The Bay of Bengal Gateway (BBG) is a submarine communications cable being built to provide a direct trunk connection between Barka (Sultanate of Oman) and Penang (Malaysia) with four branches to Fujairah (UAE), Mumbai (India), Colombo (Sri Lanka) and Chennai (India). The project is being carried out by a consortium that includes Vodafone, Omantel, Etisalat, Reliance Jio Infocomm, Dialog and Telekom Malaysia.

Note : This cable consists a speed of 6.4 Terrabits Per Second (Tbps) of international bandwidth to Sri Lanka. Furthermore, now adays this is identified as a 100Gbps-plus submarine cable.

In news (Tuesday 30th May 2016) : 
Sri Lanka’s premier telecommunications service provider, Dialog Axiata PLC, announced this week, the connection of Sri Lanka to the Ultra High Capacity 100G-PLUS Bay of Bengal Gateway (BBG) Submarine Fibre Optic Cable via its state-of-the-art Cable Landing Station (CLS) at Mount Lavinia (South Colombo).
 


Source : https://en.wikipedia.org/wiki/Bay_of_Bengal_Gateway 
https://www.dialog.lk/dialog-connects-sri-lanka-to-ultra-high-speed-100g-plus-submarine-cable
https://www.bayofbengalgateway.com/

More about Dialog Axiata Network (MTN Networks) : https://en.wikipedia.org/wiki/Dialog_Axiata 

As some of you may heard already, in early 20's there was a problem with receiving Internet to the country from the global Internet, due to a damage in digital fiber optic submarine cable. I found the following article related to that incident which explains a lot about the problem which occurred in  Aug, 2004.

http://www.networkworld.com/article/2324749/system-management/sri-lankan-internet-services-restored-after-cable-cut.html


SEA-ME-WE 3

SEA-ME-WE 3 or South-East Asia - Middle East - Western Europe 3 is an optical submarine telecommunications cable linking those regions and is the longest in the world, completed in late 2000. It is led by France Telecom and China Telecom, and is administered by Singtel, a telecommunications operator owned by the Government of Singapore. The Consortium is formed by 92 other investors from the telecom industry. It was commissioned in March 2000.

Note : SLT gets internet through this cable.

Source : http://www.seamewe5.com/
https://en.wikipedia.org/wiki/SEA-ME-WE_3
http://www.smw3.com/
https://en.wikipedia.org/wiki/Submarine_communications_cable

i2i cable network

Bharti Airtel has two international landing stations in Chennai, one connects with the i2i cable network between Chennai and Singapore, the other connects with the SEA-ME-WE 4.

Singapore Telecommunications Limited, commonly abbreviated as Singtel, is a Singaporean telecommunications company, with a combined mobile subscriber base of over 600 million customers in 25 countries at end of July, 2016,[1] making it one of the largest mobile network operators in Singapore and the 20–30 largest in the world.

Singtel has expanded aggressively outside its home market and owns shares in many regional operators, including 100% of the second largest Australian telco, Optus, which was acquired in 2001 from Cable & Wireless and other shareholders of Optus, and 32.15% [5] of Bharti Airtel, the largest carrier in India.

Source : https://en.wikipedia.org/wiki/Singtel
http://www.submarinenetworks.com/stations/asia/india/chennai-bharti

Hope you learned something new !! Cheers !!