For the basic theories of SDH and DWDM, refer to the HCIA-Transmission class notes. In this feature, you can get a lot of learning videos.
For SDH devices, I suggest you learn the user manual of OSN3500 devices. For ONT products, you can learn the user manual of OSN1800, OSN8800, and OSN9800 devices. If you don't have enough time, it is recommended to only study OSN3500 and OSN1800.
For the basic theories of SDH and DWDM, refer to the HCIA-Transmission class notes. In this feature, you can get a lot of learning videos.
For SDH devices, I suggest you learn the user manual of OSN3500 devices. For ONT products, you can learn the user manual of OSN1800, OSN8800, and OSN9800 devices. If you don't have enough time, it is recommended to only study OSN3500 and OSN1800.
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