Data communication apparatus which can use either an analog or a
Data communication apparatus with an abbreviated dial key having
Data communication apparatus with interrupt completion detecting
Data communication device and data communication method
Data communication system and apparatus for transmitting data on
Data radio communication apparatus and system
Data transmission apparatus and data reception apparatus
Data transmission arrangement
Data transmission over a communication line
Dedicated line eliminator for facsimile/telephone systems
Device for aiding maintenance of an electromechanical installati
Dial inbound meter interface unit (MIU) for automatic meter read
Dial verifier, especially for facsimile transmission
Document distribution system
Document transmission method upon generation of an error during
Door ajar signalling device
DTMF transmission and displaying method for facsimile system