The Advantech MicroTCA™ Carrier Hub UTCA-5503 combines into a single AdvancedMC Module the control and management infrastructure and the interconnect fabric resources necessary to support up to twelve AdvancedMCs in a MicroTCA shelf: 1. A Primary Gigabit ethernet fabric on Common Options Fabric A. 2.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.