Pakistan Telecommunication Company Limited (PTCL) is upgrading its Telephone Exchanges from Time Division Multiplexing (TDM) based technology to latest Next Generation Network (NGN) technology for providing better and improved services to its valued customers.This is to inform our valued customers that PTCL will start the migration series from Korangi Exchange Area from 3rd July 2011 till-13 July 2011 to streamline and make the service and Hi-tech, utilizing state of art technology.
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