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Digital Circuit Capacity Increase System and its Developing Direction

Pan Heng; Shi Jianwei  
With the development of digital user loop technology and low speed voice coding technology key to ISDN, thecommunication circuit capacity increase technology has greatly advanced in recent years.This paper deals with the principlesand structure features of the second generation circuit capacity increase system,predicts its developing direction and putsforward some ideas on the third generation circuit capacity increase system
【Fund】: 国家自然科学基金
【CateGory Index】: TN914.32
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