Knoxville Telephone
- Provides VoIP, Traditional and Converged, PBX phone systems to the small enterprise. Oak Ridge
- http://www.knoxvilletelephone.com/

B & B Cabling, Inc.
- Installing Network Data and Phone cabling. Located in Memphis
- http://www.bnbcabling.com/

JMC Communications
- Sells and installs telephone equipment. Nashville
- http://www.jmccommunications.net/

Communications Service Inc.
- Communications company that services and supplies voice and data products from Vodavi, Adtran and others. Nashville
- http://www.csi-tn.com/

Chattanooga Telephone Company
- Dealer of communication equipment, installation, service and repair on most manufacturers as well as school paging systems and nurse call stations. Chattanooga
- http://www.chattanoogatelephone.com/

Tennessee Business Communication Services, Inc.,
- Nashville business telephone system sales and service.
- http://www.tbcsinc.com/

Telcomm Services
- Providing communication equipment and premises wiring for communication and data. Serving East Tennessee and the South East. Located in Knoxville.
- http://www.telcommservices.com/

GFA Electronics Inc.
- Repairs telecommunications equipment and also sells some surplus equipment. Nashville
- http://www.gfaelectronics.com/