The Advantech MicroTCA™ Carrier Hub UTCA-5503 combines into a single AdvancedMC Module that controls and manages infrastructure and the interconnect fabric resources necessary to support up to twelve AdvancedMCs in a MicroTCA shelf:A Primary Gigabit Ethernet fabric on Common Options Fabric A MicroTCA Carrier Management Controller (MCMC) functions to configure and control the elements Where redundancy is required, two MCHs permit the creation of highly reliable systems.