The Special Digital Switches are the product offered by Matrix. The company offers special switches for the electricity utility companies using PLCC network as their communication backbone. Matrix PLCC EPAX supports dial up lines and works as local and transit exchange simultaneously. Matrix PLCC Express is a switch for the express lines connecting critical locations. The product Special Digital Switches are for EPAX for PLCC Applications. The PLCC network itself is typical in its architecture and topology. In addition, PLCC users depend heavily on communication to keep the electricity infrastructure run uninterrupted round-the-clock. The unique features of the Special Digital Switches: