H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
344/1
H04Q 1/20 (2006.01) H04M 3/30 (2006.01)
Patent
CA 1211189
AN ARRANGEMENT FOR SUBSCRIBER LINE RING TESTING ABSTRACT OF THE DISCLOSURE An arrangement for automatically testing a plurality of subscriber lines, which are operation- ally connected to an electromechanical switching system is shown. Operational service is to be trans- ferred from the electromechanical switching system to a digital switching system. This arrangement provides for automatically verifying whether the digital switching system is applying the proper ringing signal to each subscriber by a comparison with that applied by the electromechanical switching system.
441187
Daniels William R.
Young John S.
Gte Automatic Electric Incorporated
R. William Wray & Associates
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