IT company Tata Consultancy Services (TCS) and Indian state-owned telco Bharat Sanchar Nigam Limited (BSNL) plan to build four data centers across India.

The four data centers will be located in the four regions of the country (north, east, south, and west) and each will also feature a secondary disaster recovery data center. Further details weren’t shared.

The plan is part of an Rs15,000-crore ($1.8bn) deal between the two companies that will see BSNL deploy a 4G network across the country.

In addition, TCS, in collaboration with the government’s Centre for Development of Telematics (C-DOT), will make 38 deployments across BSNL premises, as part of the 4G network.

Natarajan Ganapathy Subramaniam, COO at TCS, said the company is working with hardware supply partners to complete the implementation by June.

Last summer, Tata subsidiary Tejas Networks confirmed it had received a purchase order from BSNL to the value of Rs 74.92 billion ($899m). This transaction entailed Tejas supplying telecom equipment for approximately 100,000 BSNL sites.

In the last two years, India’s government has shifted to restrict foreign telecom vendors from playing a pivotal role in the country’s 4G and 5G modernization projects.

Founded in 2000, BSNL is the fourth largest mobile operator in India. The company currently has nine data centers across India in New Delhi, Ahmedabad, Faridabad, Alappuzha, Bangalore, Jaipur, Mumbai, Hyderabad, and Ludhiana.

BSNL has recently been recruited to work with the government to geotag key telecom infrastructure and optical fiber cables to support coordination, particularly in disaster situations.