Half-duplex or full-duplex automode operation for use in data co
Handheld facsimile and alphanumeric message transceiver operatin
Handling incoming data/facsimile transmissions and voice calls i
Handy communication terminal
HDSL and POTS carrier system
Health support system
High fidelity speech encoding for telecommunications systems
High impedance signal detection device
High speed digital data transmission over switched voice network
High speed modem
Home merchandise ordering telecommunications terminal
Home office communication system and method
Host computer digital signal processing system for communicating
Host computer digital signal processing system for communicating
Host computer digital signal processing system for communicating
Host computer digital signal processing system for communicating
Host computer digital signal processing system for...
Host load balancing
Hybrid circuit and data communication apparatus
Hybrid communication devices with one telephone line