Barrier Terminal Block national standard identification methods to identify

One or more of the following may be used to identify a particular device barrier terminal block and 24 port patch panel terminals. 

A related product labeling system uses to determine the actual or relative location and identification device terminals or specific wire line side. 

2 related products using the tagging system to identify and recognize the device terminals and specific color-coded wire terminals. 

3 using graphic symbols specified in crossover ethernet cable‍  For the use of auxiliary symbols, should be consistent with the GB4728 graphics. 

4 uses specified in Chapter 5 of this standard alphanumeric symbols.‍