AT&T is the largest ATM provider in the country, with local networks in 22 states, plus national and international long haul networks; but many customers are likely to migrate from ATM to IP and Ethernet within the next few years. 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.