写出2.048Mb/s支路信号进入STM-1帧结构的复用映射结构及它的速率变化过程？
正确答案:
2.048Mb/s→C-12→VC-12→TU-12
2.176Mb/s2.240Mb/s2.304Mb/s
→TUG-2→TUG-3→VC-4
6.912Mb/s49.536Mb/s150.336Mb/s
→AU-4→AUG→STM-1
150.912Mb/s150.912Mb/s155.520Mb/s
2.176Mb/s2.240Mb/s2.304Mb/s
→TUG-2→TUG-3→VC-4
6.912Mb/s49.536Mb/s150.336Mb/s
→AU-4→AUG→STM-1
150.912Mb/s150.912Mb/s155.520Mb/s
答案解析:有
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