Neutral Tandem is one of the leading providers of tandem services to wireless, cable and broadband providers in Illinois. Founded in 2003, the company connects more than 290 million telephone numbers assigned to carriers. It offers telephone directory monitoring and voice and data traffic exchange services. Neutral Tandem operates a network operations center that offers 24-hour call monitoring services. The company provides a variety of wireless solutions to reduce network, operating and capital costs, simplify routing and improve efficiency. It offers a single point of interface for carriers to route traffic to Neutral Tandem s markets throughout the United States. The company organizes various trade shows, promotional events and presentations.