Cabling system for low voltage and very low voltage networks in
Call control method and apparatus for a switching system
Call establishment for simultaneous analog and digital communica
Call path display telephone system and method
Call progress information in cable telephony
Call progress information in cable telephony
Call progress information in cable telephony
Call progress information in cable telephony
Call progress monitor for a computer telephone interface
Call tagging user information in a telephonic environment
Call waiting service in multimedia-capable network
Call waiting-caller identification notification device
Call-waiting tone detection technique
Call-waiting tone detection technique
Caller ID system
Caller ID system with retransmitted caller ID information
Caller ID telephone with signal attenuation
Calling system for short duration data transactions
Carbon microphone interface for a modem
Carrier locating system