ELECTRIC AND ELECTRONIC, OPTO-ELECTRONIC, ANALOG, DIGITAL, WIRE-BASED AND WIRELESS COMMUNICATION SYSTEMS AND APPARATUS, NAMELY, PRIVATE BRANCH EXCHANGES; TELEPHONES, AND TELEPHONE SYSTEMS, COMPRISED OF SYSTEM TELEPHONES, ANSWERING MACHINES AND OPERATOR TERMINAL; APPARATUS FOR ACQUISITION, COMPUTING, BROADCASTING, TRANSMITTING, EXCHANGING, STORING, RECEIVING AND OUTPUTTING OF SPEECH, TEXT AND DATA, NAMELY, TELEPHONE CONNECTION COMPUTER HARDWARE ROUTERS AND SWITCHING DEVICES; TELECOMMUNICATION ...