On an ONS 15454 node you can tunnel a（n） （）.A、 SDH circuit over a SONET network delivering it as an SDH signalB、 SDH circuit over a SONET network delivering it as a SONET signalC、 SONET circuit over an SDH network delivering it as an SDH signalD、 SONET circuit over an SDH network delivering it as a SONET signal
On an ONS 15454 node you can tunnel a（n） （）.
- A、 SDH circuit over a SONET network delivering it as an SDH signal
- B、 SDH circuit over a SONET network delivering it as a SONET signal
- C、 SONET circuit over an SDH network delivering it as an SDH signal
- D、 SONET circuit over an SDH network delivering it as a SONET signal
相关考题：
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Which three timing modes are supported on the ONS 15454 shelf？ （）A、 line timingB、 loop timingC、 internal timingD、 through timingE、 external timing
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