ELECTRIC, ELECTRONIC, OPTO-ELECTRONIC, ANALOG, DIGITAL, WIRE-BASED AND WIRELESS COMMUNICATION SYSTEMS AND APPARATUS, NAMELY PRIVATE BRANCH EXCHANGES; TELEPHONES; TELEPHONE SYSTEMS COMPRISED OF SYSTEM TELEPHONES AND ANSWERING MACHINES; 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 DEVICES, NAMELY MODEMS, ANALO...