A profile · Knoxville

Cornerstone Data Systems

Knoxville, TN · Serves a 61-mile radius · Established 1998

Knoxville's go-to contractor for ethernet & structured cabling and power over ethernet. Cornerstone Data Systems serves residential and commercial clients across Tennessee.

Owner-operator Deborah Roberts runs the day-to-day at Cornerstone Data Systems, working with the kind of hands-on attention to detail that's gotten the shop 148 verified reviews on HandyWired. After 28 years in the trade, the work speaks for itself.

4.7 out of 5 · 148 verified reviews

What they do 4 focused categories of work.

Ethernet & Structured Cabling

Cat5e, Cat6, Cat6A installation and termination for homes and businesses.

Power over Ethernet (PoE)

PoE switch installation, WAP cabling, and powered device networks.

Security Camera Systems

IP camera installation, NVR setup, and surveillance cabling.

Coaxial & Cable TV

RG6/RG59 installation for cable TV, satellite, and MoCA networks.

Trained and certified 4 credentials, current as of last refresh.

State Low-Voltage License /OSHA 30 /FOA CFOT /OSHA 10

Verified by HandyWired · last refreshed April 2026.