Data entry and display control circuit
Data interface for telephone system
Data message storage and pick up service
Data modem having line verification and automatic disconnect...
Data modems with automatic equalization, drop-out detection...
Data network-assisted conference establishment
Data processing
Data processing equipment
Data set adapter
Data signalling unit for telephone systems
Data synchronization circuit
Data terminal for telephone circuits
Data transfer between high bit rate buses via unshielded low...
Data translator and recording system
Data transmission
Data transmission apparatus and data reception apparatus
Data transmission arrangement
Data transmission in a telephone exchange system
Data transmission method and system for forming a global...
Data transmission over long distance circuits