TeleSystems' technicians have over 125 years of experience in the telecommunications industry and all are factory-certified to work on TOSHIBA business telephone systems, as a TOSHIBA Authorized Dealer. TeleSystems' technicians also have factory certifications for NORTEL (Norstar), AVAYA (Partner, Magix, Legend), PANASONIC, SAMSUNG, INTERTEL, IWATSU and TIE, as well as experience with MITEL, TELRAD, VODAVI, MACROTEL, COMDIAL and 3COM equipment.