Connect Technology - Contractor specializing in optical fiber and high-speed copper network cabling for CCTV, Access Control and telephone systems. Elk Grove Village A-Tel Communications - Offering communication phone systems for both large and small businesses. Harwood Heights Tele-Movers - Buy and sell and install new, used, refurbished business telephone equipment. Commercial Telephone Systems - Sales and service of Telephone systems, serving a 100 mile radius from the St. Louis Arch. Granite City Technology Solutions Group, Inc. - Provider of voice and data solutions, telephone, voicemail, call center and IP located in Wheaton. Prime Telecommunications, Inc. - Providing business telephone and voice-data systems to the greater Chicago area. D & S Communications - Communication systems and service for the secondary market. Elgin Wireline Inc. - Provides telecommunication services to the greater Chicago area. Offerings include phone systems, voice and data cabling, VoIP, and paging. Dial-A-Tech Communications, Ltd. - Sales and service of business telephone systems in and around the Chicago area. Chicago Ridge Wiilcom - Sales and service on business telephone systems. Gurnee Applied Communications Group - Supply, design, and installation of communication cabling systems. Roselle Bishop Computer Corp. - Avaya telephone system service, IP Office, cabling, Network troubleshooting and installations. Hoffman Estates Converged Communication Systems - Installation, service and maintenance. Focused on business telephone systems, Voip, IP office and internet. Evanston Donovan Consulting & Telephone Repair - Sales and servicing Voip from Nortel, Mitel, Allworx, Vertical and other telephone manufacturers in and around the Rockford, IL area.