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- Offering communication phone systems for both large and small businesses. Harwood Heights
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
Commercial Telephone Systems
- Sales and service of Telephone systems, serving a 100 mile radius from the St. Louis Arch. Granite City
- Contractor specializing in optical fiber and high-speed copper network cabling for CCTV, Access Control and telephone systems. Elk Grove Village
Converged Communication Systems
- Installation, service and maintenance. Focused on business telephone systems, Voip, IP office and internet. Evanston
D & S Communications
- Communication systems and service for the secondary market. Elgin
- Lucent legend, small PBX /key system. Category 3 and 5 voice and data cabling in the Chicago area.
Dial-A-Tech Communications, Ltd.
- Sales and service of business telephone systems in and around the Chicago area. Chicago Ridge
Donovan Consulting & Telephone Repair
- Sales and servicing Voip from Nortel, Mitel, Allworx, Vertical and other telephone manufacturers in and around the Rockford, IL area.
Prime Telecommunications, Inc.
- Providing business telephone and voice-data systems to the greater Chicago area.
Technology Solutions Group, Inc.
- Provider of voice and data solutions, telephone, voicemail, call center and IP located in Wheaton.
- Buy and sell and install new, used, refurbished business telephone equipment.
- Sales and service on business telephone systems. Gurnee
- Provides telecommunication services to the greater Chicago area. Offerings include phone systems, voice and data cabling, VoIP, and paging.
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