MRV Communications 
The platform targets a wide range of aggregation and multi-tenant Carrier Ethernet applications, including business broadband delivery to office parks or buildings such as multiple dwelling units or multiple tenant units, mobile backhaul applications requiring aggregation of data from multiple high-speed downlink packet access (HSDPA) cell sites, and NID applications supporting both Metro Ethernet and synchronous digital hierarchy (SDH)/SONET backbone connections where network failover support is required.
http://www.mrv.com