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

"This past year our church and school went through a migration from our aging in-house phone system to a new Panasonic KX-NS 700 PBX system.  I can say, without a doubt that of all the technical vendor companies I have ever worked with, your staff comes up on top.  I have to be honest, that I had my doubts that your relatively small company could pull this migration off with minimal down time and minimal phone interruption but your staff did it.

The expertise of Mike and John in my book is unparalleled and the proposed solution fit us like a glove at a cost that was also amazing."

Daniel Burroughs // Director of Information Technology

"Just wanted to drop you a note to let you know what a FANTASTIC job Mike and D.J. did.  They were fast, friendly, professional, and most importantly the interruptions to the workforce was kept to a minimum.  Thanks for making all this happen."

Scott Null // IT and Operations Manager // King Filtration Technologies 

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.

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

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.

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.

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.

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