Bharti Airtel has signed a $900 million network expansion contract with Nokia Siemens Networks (NSN). Under the deal, NSN will expand Bharti's GSM network in eight circles and provide 1.8 million next-generation network (NGN) ports in order to expand Bharti's national long distance (NLD) and international long distance services (ILD). NSN will also deliver a platform for increasing Bharti's international prepaid calling card capacity by 4.5 million users. The GSM and NGN expansions are expected to take place over the next two years while the international calling card expansion is planned over the next three years. Bharti will reportedly raise resources internally to fund the order. Bharti is also negotiating a similar network expansion deal with Ericsson.