Method for selectively alerting multiple telephones of an incomi

Method for sending and receiving video images

Method for sending out absent messages from ISDN exchange system

Method for serving character message transmission during...

Method for signalling/communication within an entrance telephone

Method for silently alerting inbound-only telemetry interface un

Method for switching between a data communication session and a

Method for the transmission of a high-bit-rate digital signal

Method for the use of a telephone system with common signaling c

Method for transferring dial tone in real time in computer...

Method for transmitting absence information in facsimile system

Method for transmitting and receiving data over a home...

Method for transmitting billing data and invoices

Method for transmitting jobs between computer systems, and...

Method for transmitting jobs between computer systems, and...

Method for updating a database using a telephone

Method for verifying access authorization for voice...

Method for visual delivery to a caller of selected information a

Method of a message modification in a communication system...

Method of adjusting the end of transmission in a modem