• AT&T
  • Verizon
  • Sonic Telecom
  • TelePacific

  • UPS
  • County of Placer
  • Roseville City School District
  • Sonoma State University
  • Los Rios Community College District
  • Hartnell Community College District
  • Lawrence Berkeley National Laboratory
  • Yosemite Community College District
  • Parlier Unified School District
  • Spreckels Union School District
  • Bellevue Union Elementary School District

  • Marriott
  • Laguna Beach Unified School District
  • Starbucks
  • Rite-Aid
  • Macy’s
  • BMW
  • Acura
  • Sutter Health
  • McClellan Park
  • Saddleback Valley Unified School District
  • West Contra Costa Unified School District
“Pinnacle Telecommunications is one of AT&T’s primary Operating Territory Vendor’s in California. Pinnacle partners with AT&T to provide Central Office Infrastructure Engineering and Installation services. Over the last 14+ years, Pinnacle has consistently delivered quality EF&I services, on time, and on budget. Pinnacle is very professional, and easy to do business with. They have been a very strong partner in developing and deploying solutions that help AT&T meet its network growth and reliability goals.”
AT&T Network Operations Executive
“I have to say these were the most organized closeout documents I have ever received and processed… It was a pleasure working with [PTI] on this project. Your company is one of the better vendors to work with.”
Project Coordinator, Infinity Communications & Consulting
“I have managed various projects … and I have to say that I am very impressed by the way [PTI’s] crew came in and were able to complete the job at a quick rate.

Not only did they complete the job quickly but it is also some of the best cabling that I have seen a contractor provide for our district.”

Technology Supervisor, Parlier Unified School District