With OTN transitioning from submarine and core networks into metro and access networks, operators need to manage fault-finding across a broader network. Recently, ITU-T added OTN functions to the G.709 standard, such as multistage multiplexing, ODUflex, ODU0 and GMP protocol combined with TCM, giving operators the required visibility.
Combining this with an understanding of the maintenance signals available within the OTN overhead assures the network stability required by today’s modern networks.
