Pakistan Telecommunication Authority is Pakistani government agency responsible for the establishment, operation and maintenance of telecommunications in Pakistan. Headquartered in Islamabad, PTA also has regional offices located in Karachi, Lahore, Peshawar, Quetta, Muzaffarabad and Rawalpindi.By November 2013, Pakistan Telecommunication Authority reported that overall cellular phone subscription has reached 132 million with increase of 25 million new numbers in the past two years.HistoryThe Pakistan Telecommunication Ordinance 1994, established the primary regulatory framework for the telecommunication industry including the establishment of an authority. Thereafter, Telecommunication (Re-Organization) Act no XVII was promulgated in 1996 that aimed to reorganize the telecom sector of Pakistan. Under Telecom Reorganization Act 1996, Pakistan Telecommunication Authority (PTA) was established in January 1997 to regulate the establishment, operation and maintenance of telecommunication systems, and the provision of telecom services.FunctionsTo regulate the establishment, operation and maintenance of telecommunication systems and provision of telecommunication services in Pakistan. To receive and expeditiously dispose of applications for the use of radio-frequency spectrum. To promote and protect the interests of users of telecommunication services in Pakistan. To promote the availability of a wide range of high quality, efficient, cost effective and competitive telecommunication services throughout Pakistan. To promote rapid modernization of telecommunication systems and telecommunication services. To investigate and adjudicate on complaints and other claims made against licensees arising out of alleged contraventions of the provisions of this Act, the rules made and licenses issued there under and take action accordingly. To make recommendations to the Federal Government on policies with respect to international telecommunications, provision of support for participation in international meetings and agreements to be executed in relation to the routing of international traffic and accounting settlements.