The Guardian service offers a comprehensive on-site support package for customers who require a high level of responsiveness and on-site support. Guardian service includes a mix of telephone support, on-site engineering assistance, hardware replacement, software updates, and Web services, making it an excellent choice for networks running mission-critical applications. Guardian service is a successful support program providing services that are delivered in a timely manner by engineers who are knowledgeable about networking technology and customers' specific networking needs. As a Guardian customer, you will receive phone support from seasoned technical support engineers who are assisted by a sophisticated call-tracking database, a clear escalation process, and a fully staffed problem-replication lab. When required, a 3Com systems engineer or trained representative provides on-site assistance or hardware replacement. Guardian service has been designed to facilitate customers' access to essential technical information. As a result, customers can gain access to the most current versions of all major, minor, and maintenance releases of 3Com software. The Guardian service is advantageous not only from a network maintenance perspective, but also from a business perspective. By providing on-site support services for one predictable annual fee, the Guardian service takes the guesswork out of planning and budgeting for network maintenance.