Designed for both Enterprise and Service Provider environments, the Cisco ONS 15501 Erbium-Doped Fiber Amplifier (EDFA) is a low-noise, gain flattened C-band optical amplifier designed to extend the distance of today's Metro DWDM optical network. It complements Cisco ONS 15540 DWDM solution, providing customers with the capability to extend their 100GHz, 32-channel, 2.5Gbps/10Gbps optical infrastructure over longer distances.Enterprises using the ONS 15501 EDFA to extend their metro DWDM network to remote data centers and branch offices can lower the total cost of ownership and deliver e-business solutions faster and more efficiently to all areas of their metro DWDM network.With the ONS 15501 EDFA in an ONS 155xx network, service providers will realize greater revenue and profitability by extending the reach of their network infrastructure and services to remote customers.