Cisco Content Services Gateway (CSG) is a high-speed processing module that brings content billing and user awareness to the Cisco Catalyst 6500 Series Switch and Cisco 7600 Series Internet Router platforms. The CSG will typically be located at the edge of a network in an ISP POP, or Regional Data Center.The CSG offers more than standard IP flow accounting; the CSG also examines HTTP requests to gather URLs and other HTTP header information for accounting purposes. Additionally, the CSG gathers information on usernames and usage statistics, and enables differentiated billing for individual transactions based on hostname, on the directory accessed, or on individual files.