Communication system having reconfigurable data terminals

• US 4,788,657 A
• Filed: 12/12/1986
• Issued: 11/29/1988
• Est. Priority Date: 12/27/1983
• Status: Expired due to Term

• Current Assignee: American Telephone & Telegraph Company (AT&T, Inc.), AT&T Information Systems Inc. (AT&T, Inc.)
• Original Assignee: American Telephone & Telegraph Company (AT&T, Inc.), AT&T Information Systems Inc. (AT&T, Inc.)
• Inventors: Smith, Gerald H., Miracle, Michael J., Douglas, Neal M., Keverian, Kenneth M.
• Primary Examiner(s): Shaw, Gareth D.
• Assistant Examiner(s): KULIK, PAUL V
• Application Number:
  US06/941,568
• Time in Patent Office: 718 Days
• Field of Search: 364/200 MS File, 364/900 MS File, 364/200, 364/900, 379/65, 379/90, 379/94, 379/96, 379/242, 379/245, 379/258
• US Class Current: 710/104
• CPC Class Codes: H04M 11/066 Telephone sets adapted for data transmision

Abstract

The disclosed communication system enables communications between reconfigurable data terminals and a variety of connected computers, having dissimilar operating parameters, by automatically reconfiguring the operating parameters of the calling terminal to match those of the called computer. The system controller, in response to receiving the dialed number of the called computer from the calling terminal, accesses its memory for the operating parameters of the called computer and transmits these operating parameters to reconfigure the calling terminal. Another embodiment enables the operating parameters of a terminal to be reconfigured in any of a number of operating modes in response to a reconfiguration request signal sent to the system controller from the terminal.

Claims

1. A communication system comprising a terminal, a system controller, and a plurality of communication devices switchably connectable to said terminal, said terminal including

means for generating and transmitting one of a group of reconfiguration signals to said controller identifying one of said plurality of communication devices to which a connection is requested, and

means responsive to a predetermined terminal reconfiguration command received from said controller including parameter data for reconfiguring an operating parameter of said terminal in accordance with said reconfiguration command and

said controller including

means solely responsive to said one of a group of reconfiguration signals received from said terminal for selecting said parameter data and for transmitting it to said terminal in said predetermined reconfiguration command, said selecting and transmitting means operable prior to said controller establishing communication between said terminal and one of said plurality of communication devices specified in said one of a group of reconfiguration signals.

2. The communication system of claim 1 wherein said reconfiguration signal is a dialing signal which selects which one of said plurality of communication devices is to communicate with said terminal.

3. The communication system of claim 1 wherein said terminal includes a display circuit, said predetermined reconfiguration command includes an operating parameter of said display circuit, and said reconfiguring means of said terminal reconfigures said display circuit in response to said display circuit operating parameter.

4. The communication system of claim 1 wherein said reconfiguration command includes a non-communication terminal specific operating parameter and said reconfiguring means is responsive to said terminal operating parameter for reconfiguring said terminal.

5. A controller adapted for controlling a communication system including a terminal and a plurality of communication devices switchably connectable to said terminal, said controller comprising

means for receiving any one of a group of terminal reconfiguration signals from said terminal each identifying a specific reconfiguration request at said terminal and

means responsive solely to said reconfiguration signal for selecting and transmitting a predetermined terminal reconfiguration command to said terminal including parameter data specifying an operating parameter to be reconfigured in accordance with said specific reconfiguration request, said selecting and transmitting means operable prior to establishing communication between said terminal and one of said plurality of communication devices specified in said specific reconfiguration request.

6. The controller of claim 5 wherein

said configuration signal received from said terminal identifies one of said plurality of communication devices to which said terminal requests a connection and

said predetermined reconfiguration command includes a communication parameter to reconfigure said terminal to enable compatible communications between said terminal and said one of said plurality of communication devices.

7. The controller of claim 6 wherein said configuration signal is a dialing signal which selects which one of said plurality of communication devices is to communicate with said terminal.

8. A method of reconfiguring a communication system including a terminal, a system controller and a plurality of communication devices switchably connectable to said terminal, comprising the steps of:

generating and transmitting one of a group of reconfiguration signals to said controller identifying one of said plurality of communication devices,

selecting a predetermined parameter solely in response to one of said group of reconfiguration signals and transmitting it from said controller to said terminal in a predetermined terminal reconfiguration command, said selecting and transmitting step operable prior to said controller establishing communication between said terminal and one of said plurality of communication devices specified in said one of a group of reconfiguration signals, and

reconfiguring an operating parameter at said terminal in response to said predetermined reconfiguration command.

9. The method of claim 8 wherein said reconfiguration signal is a dialing signal for selecting which one of said plurality of communication devices is to communicate with said terminal.

10. A communication terminal for use in a telephone communication system including a plurality of communication devices and a system controller for controlling connection between said terminal and one of said plurality of communication devices, said terminal comprising

means for generating and transmitting to the telephone system controller one of a group of reconfiguration signals each identifying a specific reconfiguration request requesting an operating parameter required for operating said terminal and

means responsive to a predetermined terminal reconfiguration command received from said telephone system controller after a communication connection is established thereto, said reconfiguration command received in response to said one of a group of reconfiguration signals including data for reconfiguring an operating parameter of said terminal in accordance with said reconfiguration command.

11. The communication terminal of claim 10 wherein

said reconfiguration command specifies a noncommunication terminal specific operating parameter required for operating said terminal in a local mode.