Equipment
- 861
- Bishop Computer Corp.
- Avaya telephone system service, IP Office, cabling, Network troubleshooting and installations. Hoffman Estates
- 862
- Connect Technology
- Contractor specializing in optical fiber and high-speed copper network cabling for CCTV, Access Control and telephone systems. Elk Grove Village
- 863
- Converged Communication Systems
- Installation, service and maintenance. Focused on business telephone systems, Voip, IP office and internet. Evanston
- 865
- Dial-A-Tech Communications, Ltd.
- Sales and service of business telephone systems in and around the Chicago area. Chicago Ridge
- 866
- Technology Solutions Group, Inc.
- Provider of voice and data solutions, telephone, voicemail, call center and IP located in Wheaton.
- 869
- Wireline Inc.
- Provides telecommunication services to the greater Chicago area. Offerings include phone systems, voice and data cabling, VoIP, and paging.
- 870
- Direct Line Communications
- Offers structured cabling, Lucent wireless networking, security systems and data network cabling nationwide.
- 871
- Lucas Communication Inc.
- Provides residential telephone wiring, key systems, PBX systems and voice mail/auto attendant systems, certifiable cat 6 designs and installation, fiber optic network cabling and wireless networking.
- 873
- Zen Tel, Inc.
- Independent provider of telecommunications equipment and services for Nortel, Norstar, Seimens, Rolm and Avaya systems. Lenexa
- 874
- Absolute Networking
- Provider of technology solutions and telephone systems for businesses. Louisville
- 876
- CFM Enterprises LLC.
- Provides data and voice cabling, telehone system installations, data network solutions, equipment cleanups and moves.
- 877
- National Telephone & Technology
- Install and repair business phone systems and voicemail. Serving Northern New England. Located in South Portland
- 878
- American Telecom Solutions
- Provider that designs, installs and services both data and voice systems for end users.