CSI of St. Louis, Inc. has been serving the St. Louis Area for over 45 years. Contact us today so we can show you how important you are to us.

Customer Testimonials

Just a note to thank you for your help in obtaining our new phone system and the way in which you conducted your sale. We of course, always shop around, not just for a reasonable price, but for a company who can also work with us, in an amicable way.

As a consumer, we try to find companies who are knowledgeable and friendly. CSI, filled both needs. We also appreciated Mike’s quick and efficient work. He was very patient while helping us find our way around the new system.

We are trying out the new phones today and it looks like they will be easy and hopefully more manageable for us.

Again, thank you for your pleasurable experience.

Fern Johnson // Office Manager

CSI is a true Business partner in every sense of the world. They understood my business needs and delivered the appropriate technology that enables us to meet our objectives now – and in the future. Quality people, Quality Solutions!

The new system has saved us money, improved efficiency, delighted our staff, and given us a true professional impression upon our customers!

Rob Libera // Executive Director

Crestwood Tubulars would like to take this opportunity to compliment all the people at CSI for their excellent service and customer satisfaction.

This was our first experience with CSI and we found service to be reliable and dependable and the technicians professional and knowledgeable.   Transition problems were minimal and any issues we had were solved quickly and efficiently. We gladly recommend CSI to anyone that needs an entire phone system installed or a very old one (like ours) updated to keep up with the 21st century! Thanks for a great job!

Crestwood Tubulars Inc.

I want to thank you and a very special thanks to Steve and Mike for all their hard work. They have been great to work with, and their experience has been greatly appreciated and necessary at times.

Thank you and I look forward to this level of service and partnership for many years to come.

Jorge Perez // Manager

I wanted to say that you have some great people over there and say THANK YOU to you, Chris, and everyone else for all of your help in our office move. It was a little rocky at some points and I really appreciate all of the support we had from CSI. 

On-site Lou and Mike did an excellent job. Lou took care of moving the system and phones for us and programming everything at the new office and it works exactly like I asked. Mike did a great job with the data…our wiring closet looks great (as you said it would> and everything works. (My bosses refer to it as Carl’s closet and they hope they never have to open the door, haha.)

Chris’s assistance with Nuvox was invaluable! Beyond actually figuring out what service we wanted and getting the paperwork completed, he helped with scheduling the installs and pulled the necessary strings to get things done…especially when the T-1 was not working the day before and morning of our move. We couldn’t have done it without his help and having him do the legwork on the installation, support/repairs, etc., was an immense help to me because I could focus on other things.

I’ll say it again…GREAT JOB! (not that we expected anything less)

I hope we don’t have any problems that require you to come out again anytime soon…but if we do, I know the job will be done right.

Carl Schmitz // Direct Marketing, Inc.

Lechner Realty Group, Inc. has been a customer of CSI, Inc. for over 10 years. We have found them to be professional, reliable, and conscientious. They sell a superior product and have an exceptional knowledge of that product, from installation, troubleshooting and support, to interfacing with other products and services. CSI excels in providing service after the sale to their clients. We enthusiastically recommend them.

Stephen B. Lechner // President

We would like to take this opportunity to thank CSI for a job well done. The guys were professional and knowledgeable, keeping our down time to a minimum. 

CSI carries a wide range of products and can accommodate businesses of any size. As a non-profit, we have a limited budget---but we needed to upgrade our phone system. CSI took the time to listen to our needs and then suggested the right system for our agency. It was both affordable and user friendly. The installation and training went very smoothly at both offices.

Dan Fleck and his staff were wonderful during the entire process. We would recommend CSI to anyone in the market for a new phone system.

Joan Townsend // HR Benefits Specialist

Veronica Aldridge // Administrative Assistant


Telecommunications Services

Are you looking for reliable service/repair company for your current telephone equipment?
We have a team of experienced technicians that are capable of service & repair for most major brands of telephone systems. Click Here to Request a Service Technician or Call Us Today at 636-534-6600.

Learn More