Coordinated transfer of voice and information through a digital
Coupler for a communications device
Coupler for an acoustic coupled communications device
Coupling device for use with a computer system
Customer programmable real-time system
Customized presence information delivery
Data access arrangement for detecting the hook status of an...
Data access arrangement utilizing a serialized digital data...
Data access arrangement utilizing a serialized digital data...
Data access arrangement utilizing a serialized digital data...
Data and speech transmission device
Data and telephone wiring terminal
Data base accessing system
Data circuit-terminating equipment with power source device
Data collection network apparatus and method
Data collection system
Data collection system
Data communication apparatus
Data communication apparatus
Data communication apparatus