BTI Communications Group, Ltd. strives to be a single-source solution for companies' telephone, video, and data communication needs. Since its inception in 1985, BTI has drawn upon its experience and partnerships with leading vendors to become a top provider of communication solutions. We strive to be the United States' top provider of Inter-Tel telephone and call processing systems and integrated voice and data communications solutions. Since its founding in Chicago in 1985, BTI Communications Group, Ltd. has enjoyed consistent growth through the many peaks and valleys in the fortunes of the telecommunications industry.