New Delhi, Aug 17 - Bharti Airtel Monday launched its global wholesale service portfolio, which will enable telecom companies across 50 countries to access its services.

The company has invested $500 million to expand its connectivity by building cable capacity, network infrastructure and international points of presences, an official statement said.

The portfolio includes solutions for voice and data connectivity, collaboration services, co-location, carrier outsourcing and content distribution through its next-generation high speed submarine network.

'From being a regional partner for foreign carriers, Bharti is now uniquely poised to serve global carriers to and from any part of the globe,' said David Nishball, president (enterprise services), Bharti Airtel.