ATECH

ELECTRICAL TRANSFORMERS; ELECTRIC POWER SUPPLIERS; VOLTAGE SUPPLY REGULATORS; CURRENT RECTIFIERS; POWER SWITCHING RELAYS; ELECTRICAL CONNECTORS; UNINTERRUPTED POWER SUPPLIES; TELEPHONES; TELEPHONE SWITCHING EQUIPMENT FOR DIRECT INWARD SYSTEM ACCESS, NAMELY, PRIVATE BRANCH EXCHANGES THAT REQUIRE ONLY ONE TRUNK AND THAT PROVIDE A VERBAL MENU AUTOMATIC PROCESSING OF CALLS; PAGERS; AND INVERTERS