MAINSTREET

VOICE, DATA, TEXT, IMAGE AND VIDEO COMMUNICATION NETWORK SYSTEMS COMPRISING ANY COMBINATION OF MULTIPLEXERS, DATA CONTROLLERS, DATA TERMINATION UNITS, MODEMS, CHANNEL BANKS, SHELVES, POWER SUPPLIES, CONNECTORS, CONTROL CARDS, INTERFACE CARDS AND PRINTED CIRCUIT BOARDS; VOICE, DATA, TEXT, IMAGE AND VIDEO COMMUNICATION NETWORK HARDWARE - NAMELY MULTIPLEXERS, DATA CONTROLLERS, DATA TERMINATION UNITS, MODEMS, CHANNEL BANKS, SHELVES, POWER SUPPLIES, CONNECTORS, CONTROL CARDS, INTERFACE CARDS AND PRINTED CIRCUIT BOARDS; LOCAL AREA NETWORK SYSTEMS COMPRISING ANY COMBINATION OF DATA CONTROLLERS, CABLING AND OPERATING COMPUTER PROGRAMS DESIGNED TO SUPPORT COMMUNICATIONS IN A DATA NETWORK AND INSTRUCTIONAL MANUALS USED IN CONNECTION THEREWITH, ALL SOLD AS A UNIT