The card is ideal for Enterprise customers with multiple high-speed circuits connecting remote sites served by local Telcos and PTTs. It's also ideal for customers considering bandwidth expansion of existing leased line networks. Vertical industries that benefit most include financial institutions, healthcare systems, government agencies, school districts and universities, as well as other geographically dispersed organizations. The new, enhanced CHOC12/STM4 card is designed to simplify the deployment of DS3/E3 and OC3c/STM1 services by providing up to 12 DS3/E3 channels over a single optical interface. In SONET mode, the card can be configured to support any combination of DS3/E3, subrate DS3, and OC3c. In SDH mode, the card can support E3/DS3 and STM1s. The card also comes with four Gigabit Ethernet interfaces that enable additional connectivity into server farms or service provider networks. Enhanced OSM functionality includes support for future software enhancements to deliver either Layer-2 or Layer-3 network aggregation services deployed over a consolidated network architecture based on either IP or MPLS protocols. This design expands support for Layer-2 services based on protocols such as Frame Relay, Ethernet and ATM, while simultaneously supporting Layer-3 services, such as Internet Access or IETF RFC 2547 VPN's.