Videsh Sanchar Nigam Limited (VSNL) was incorporated in 1986 as a public sector enterprise to cater to overseas communication services. In 2002, the Indian government privatised VSNL and the Tata Group acquired a controlling stake in the company.
On July 01, 2005, VSNL acquired Tyco Global Network (TGN), a state-of-the-art undersea cable network that spans 60,000 kms (37,280 miles) and the continents of North America, Europe and Asia. With this acquisition, VSNL became one of the world's largest providers of submarine cable bandwidth.
On July 25, 2005, VSNL announced another acquisition of Teleglobe International Holdings Ltd., a leading provider of wholesale voice, data, IP and mobile signaling services. The acquisition gave VSNL access to an extensive global network of more than 240 countries and territories with advanced voice, data and signaling capabilities and ownership interests or capacity in more than 80 subsea and terrestrial cables.
During this time, Tata-led VSNL built central global Network Operations Centre (G-NOC) and Service Operations Centre (SOC), and consolidated all international field operations to ensure seamless service delivery to the customers worldwide. This was in itself a large transformation project which involved integration of multiple global entities, complex global networks and staff from varied diversities.
In October 2006, VSNL incorporated a wholly owned Indian subsidiary, VSNL Global Services Limited (VGSL) under the Indian Companies Act, so that it can derive marketing and cost synergies with the Tata Group’s telecom and IT business.
VGSL, in its new avatar, was competing not only with large Indian business groups but also with global tier 1 operators in the international markets. It was then that the board took a landmark decision to rename VGSL in order to capitalise on the immense goodwill and brand awareness attached to the Tata mark globally.
On February 19, 2008 VGSL was renamed as Tata Communications Transformation Services Ltd. (TCTS) as 100% subsidiary of Tata Communications.