The 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.
PTA has its headquarters at Islamabad and zonal offices located at Karachi,Lahore,Peshawar,Quetta and Rawalpindi. More detail about Pakistan Telecommunication Authority