Silverback Communications carries an assortment of Calix products in stock with a 3 year warranty.  We work with Tier 2 and Tier 3 telco's in the resale of Calix products.   Our resource to either resell or purchase Calix gear is correlated with our direct relationships with these Telco's all over the country and the world.  Silverback can decrease lead time, reduce infrastructure cost, and provide a resource for your IT planning.   All Calix equipment comes with a 3 year warranty and advanced replacement plan.