Telephonic communications – Subscriber line or transmission line interface
Patent
1992-02-25
1998-04-28
Dwyer, James L.
Telephonic communications
Subscriber line or transmission line interface
379385, 379413, 323311, 307112, H04M 100
Patent
active
057455635
ABSTRACT:
A subscriber line circuit for a telephone network having current controlled switches and current sources. Methods of making and using the components are also disclosed.
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"IBM Technical Disclosure Bulletin" vol. 7, No.10, Mar. 1965 p. 874 Precision Current Source Independent of Supply Voltage.
Dwyer James L.
Harris Corporation
Weaver Scott L.
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