Supply, installation and commissioning of the Panasonic KX-TD1332 96NN telephone exchange in 1997, and after 9 years of non-collision operation of the system, the factory extension and modernization using the Panasonic IP PBX KX-TDE600 200DDI in the main plant in Brzeźnica near Dębica. Installation and start-up of further IP PBXs at other sites in Pustków and Lubzina (IP PBX KX-TDA100) - connection to a private VoIP VPN network.