Summary: Great product and great service. I replaced a Cisco 2901 K9 with an Adtran NetVanta 3450 and I am proud that I did. The 2901 was a defect from the factory and I struggled for 2 months trying to get support from Cisco. Many hours wasted on Cisco... The 3450 Net Vanta was plug & play comparatively. I joined the Adtran Support Community and was contacted immediately with request to be of help. The Net Vanta is faster and more feature rich all for a better price.