Competitive optical and E1 port densities argue that Huawei's market traction for the OSN 3500 is not an accident. However, relatively weak Ethernet support means that scaling data capabilities to meet growing demand could be an issue. This report contains insight and analysis of the product or service strengths and weaknesses, list of buying criteria and how the product or service fares in each category, and a comprehensive table of product or service metrics and specifications. This report is useful for purchasers who need to evaluate products, or as a source of competitive intelligence for vendors.