Apresia ? 6048G-PSR switches are designed and manufactured in Japan Hitachi Cable's Gigabit Ethernet switch, combined with Hitachi Cable's unique wide-area Ethernet technology can be used for telecom operators, three switches, routers and set up alternative low-cost, high-performance Layer 2 MAN and VPN, also can be used for medium-sized campus network convergence layer, and provides rich QoS guarantee mechanism, and better support for multiple operations.