Established in 1993, CustomCall Data Systems Inc. is one of the leading providers of billing and business process management solutions in the United States. Based in Madison, Wis., the firm supports VoIP and Internet Protocol television (IPTV) service providers, wireless, local/long-distance companies and network wholesalers. The company offers a wide range of services, such as reporting, commission and payment processing. Through its Webtop BPM application, CustomCall Data Systems Inc. offers various solutions for billing/rating, order management, account management, document management, inventory management, service activation and workflow automation.