The Pervouralsky Novotrubny Works (PNTZ) is the Russian and European leading company in the field of the steel pipe production. In 2001 INTERSYST has modernized the communication system using Alcatel Omni PCX 4400 and keeping the old telecommunication system based on KVANT PABX. The interaction of the old and new PABXs was realized.
During 2002-2005 INTERSYST has fulfilled several steps of system modernization and upgrade, but the structure became the same, based on both old and new equipment.
In 2006 the full modernization of the telecommunication system took place; the old elements were excludedand all the subscribers' capacity was switched to the modern Alcatel equipment. The modern telecommunication server Alcatel OmniPCX Enterprise was chosen as the basis of the system. The total capacity of the network has reached 5 000 ports.
In 2007-2009 the works on expanding the capacity and implementation of the modern technologies - VoIP, DECT, CCD and others were held by INTERSYST specialists.