Telephone terminal device
Telephone terminal device
Telephone terminal device having speech recognition unit
Telephone terminal device with means for detecting abandonment o
Telephone terminal equipment interface circuit
Telephone tone analysis system
Telephone tone detector
Telephone transmission circuit with improved switching device
Telephone trunk interface circuit
Telephone tuning and signaling system
Telephone updating via network provided information
Telephone visual signaling device
Telephone with a detachable key pad and method for operating it
Telephone with adaptive speed dial mechanism
Telephone with call-incoming-operation limiting function and...
Telephone with character keypad
Telephone with dial history access
Telephone with digit cancellation
Telephone with environmentally-influenced call indicator
Telephone with minimal switches for dialing