04868863 is referenced by 36 patents and cites 7 patents.

Apparatus for connecting data processing equipment to a communications network includes hardware for a range of different communications standards. Also included is a coupler (preferably in the form of a cable) having a particular standard communications plug which contains an identifying code associated with that particular standard plug, which code is used to configure the apparatus to that particular standard. The apparatus contains a digital signal processor controlled by control code contained in a control store having associated therewith a standard identifier code. Control logic reads the standard identifier code associated with the control code and the standard identifying code in the coupler and enables the apparatus if the two match (or disables if they do not match). The control store can either contain only the code associated with a particular standard or it can contain all the code for a range of standards: in the latter case the control logic would allow the signal processor to access only the sections of the control store containing the relevant control code. The invention is particularly useful for connecting data processing equipment through a modem to different country telephone networks.

Title
Apparatus for connecting data processing equipment to a communication network
Application Number
7/251157
Publication Number
4868863
Application Date
September 29, 1988
Publication Date
September 19, 1989
Inventor
Paul D Maddison
Hants
GB
Steven Cook
Hants
GB
Victor G Golding
Hants
GB
Ray Jepson
Hants
GB
Brian D Key
Hants
GB
Mark Germain
Hampshire
GB
John D Hartley
Hampshire
GB
Agent
Edward H Duffield
Assignee
IBM Corporation
NY, US
IPC
H04M 11/06
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