RAD offers specially engineered access devices for providers that are serving multi-tenant unit (MTU) office buildings, to provision broadband services over a single connection from the building to the carrier's network. RAD MTU solutions range from IADs supporting voice and data over DSL technologies, multiservice concentrators over ATM, multiservice concentrators over SDH and voice and data access over IP/Ethernet using new TDM over IP (TDMoIP) technology.