The hyper-competition in the telecom market, which was effectively caused by the introduction of "Universal Access Service (UAS)" licence in 2003 became much tougher after 3G and 4G competitive auction. About 670,000 route-kilometer (419,000-mile) of optical fibres has been laid in India by the major operators, including in the financially nonviable rural areas and the process continues. Keeping in mind the viability of providing services in rural areas, the government of India also took a proactive role to promote the NGN implementation in the country; an expert committee called "NGN eCO" was constituted in order to deliberate on the licensing, interconnection and quality of service (QoS) issues related to NGN and it submitted its report on 24 August 2007. Telecom operators found the NGN model advantageous, but huge investment requirements have prompted them to adopt a multi-phase migration and they have already started the migration process to NGN with the implementation of IP-based core-network.