(636) 534-6600

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.

About CSI Telecommunications

“The Complete One Stop Telecom Solution”

For more than 45 years, CSI Telecommunications, Inc. has been the trusted choice for over 3,000 businesses, providing essential communication services and equipment tailored to their needs.

We take pride in offering the right fit for needs, while meeting or often coming in under your expected budget.

Everything we do at CSI Telecommunications, Inc. is based around a simple business model of exceeding the expectations of the client every time and retaining a very important ongoing business partner relationship.

Our mission from the beginning of our relationship is to put you in a position where you would undoubtedly and wholeheartedly recommend CSI Telecommunications, Inc.

Telecommunications Services

Are you looking for a 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. Request a Service Technician or call us today at 636-534-6600.

We and selected third parties use cookies or similar technologies for technical purposes and, with your consent, for other purposes. You can consent to the use of such technologies by using the “Accept” button, by closing this notice, by scrolling this page, by interacting with any link or button outside of this notice or by continuing to browse otherwise.