TELEPHONE DROP FOR CONNECTING SUBSCRIBER ANALOG LINE TO DIGITAL EXCHANGE USING TIME-DIVISION CHANNEL MULTIPLEX Russian patent published in 2001 - IPC

Abstract RU 2162278 C2

FIELD: telephone communications. SUBSTANCE: relay circuit is, essentially multifunction circuit arrangement and interface circuit is designed to perform inspection functions including check-up of subscriber line and subscriber terminal as well as to conduct tests of telephone drop circuit. EFFECT: simplified design due to reduced number of parts performing relay functions. 2 cl, 1 dwg

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RU 2 162 278 C2

Authors

Paul' Kunish

Roland Krimmer

Dates

2001-01-20—Published

1997-09-24—Filed