M12 connectivity with M24/U32

Dear friend!
1. If the M24 and U32 are independent NEs, you can connect them to the M12 through optical fibers to establish internal DCC channels, or connect them to the M12 through network cables to establish external DCC channels. In this way, M12 functions as the GNE, and M24 and U32 functions as non-GNEs.
2. If M24 need to be displayed on NCE as master/slave subracks, refer to your previous post: M12 and M24.

When the M12 and M24 are on the same NE, the M24 functions as the master subrack and the M12 functions as the slave subrack. The U32 subrack cannot be combined with the M12 subrack to form a master/slave subrack. However, you can divide the door into an optical NE for management. 

Thank you!