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U-interface is the two wire interface between(a) Computing device and terminal adapter(b) Terminal adapter and exchange unit(c) Exchange unit and network terminating unit(d) Computing device and exchange unitI got this question in homework.This interesting question is from ISDN and Interface in section Digital Communication of Digital Communications

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Right answer is (C) Exchange UNIT and network terminating unit

The explanation is: U-interface is the two WIRE CONNECTION or interface between exchange unit and network terminating unit.



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