75724772
Jun 8, 1999
Apr 22, 2003
COMMUNICATION EQUIPMENT AND SYSTEMS, NAMELY, ECHO CANCELLERS, MULTIPLEXERS, TRANSCEIVERS, DATA PROCESSORS AND RELATED COMPUTER HARDWARE AND COMPUTER SOFTWARE FOR CONTROLLING AND INTEGRATING SUCH EQUIPMENT INTO COMMUNICATION SYSTEMS THAT PROVIDE ECHO CANCELLATION AND OTHER VOICE QUALITY ENHANCEMENTS
Electrical and Scientific Apparatus