Jacobson, Price, Holman & Stern, PLLC
Subscriber control module having a test apparatus for asynchronous transfer mode
 The present invention relates to a subscriber control module having a test apparatus suitable for testing internal routes in an Asynchronous Transfer Mode ATM exchange system for improved reliability and effective maintenance thereof. A subscriber control module having testing functions makes it possible that internal whole routes in the exchange system under the control by maintenance control module inside the system can be tested through the use of subscriber switching network and connection switching network. Further, a test apparatus of the present invention placed inside the exchange system can test ATM subscribers with individually different rates, configured in such a way to be identical with boards used in the exchange system so that the test apparatus can be installed inside the exchange system. 
Korea Telecom Electronics and Telecommunications Research Institute
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Seung Han Sung Mo Jin Tae Woon Seob Hae Geun
Lee Yang Kim So Kim