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Plesiochronous digital hierarchy: Revision history


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  • curprev 23:2023:20, 6 October 2015 Jerry-VA talk contribs 5,325 bytes +582 An IEEE Communicaitons Magazine article is used to document the 10 yrs over which PDH networks were replaced SDH/SONET. Refs 2& 3 are same, I don't know how to re-cite a previous ref, kindly help. undo

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