QUATTRO

DIGITAL TELEPHONE SYSTEMS COMPRISED OF MULTIPLE HANDSETS OR SPEAKERPHONES, CORDLESS BASE UNITS FOR HANDSETS, SPEAKERPHONES OR TELEPHONES, CALLER ID SERVERS, NOISE CANCELING HEADSETS, HEADSET JACKS, BELT CLIPS, LINE CORD MANAGERS, NAMELY, LINE CORD COUPLERS FOR USE WITH LINE SERVICE CONNECTED TO JACKS, MODULAR JACKS, DATA PORTS, BATTERY PACKS, CHARGERS AND COMPONENT PARTS THEREOF; AND CORDLESS TELEPHONES, SPEAKERPHONES, CORDLESS HANDSETS AND CORDLESS BASE UNITS THEREFOR