Cisco CallManager Express is a solution embedded in Cisco IOS Software that provides call processing for Cisco IP phones. This solution enables the large portfolio of Cisco access routers to deliver telephony features similar to those that are commonly used by business users to meet the requirements of the small office, thereby enabling deployment of a cost-effective, highly reliable, IP Communications solution for the small office. Customers can now scale IP telephony to a small site or branch office with a solution that is very simple to deploy, administer, and maintain. The Cisco CallManager Express solution is best suited for customers who are looking for a low-cost, reliable, feature-rich solution.