If the overhead bytes pass through the backplane bus between two slots, the two slots are called paired slots. Paired slots enable automatic transparent transmission of overhead bytes, such as ()…

If the overhead bytes pass through the backplane bus between two slots, the two slots are called paired slots. Paired slots enable automatic transparent transmission of overhead bytes, such as () and (). Even if the SCC board on the local element is offline, it can improve the MSP switching performance and protect the DCC communication with other network elements. (Multiple choice)