About us

GERDES Aktiengesellschaft is an internationally operating technology provider. The company, founded in 1989, has specialised particularly in telecommunications and prison security technology.

More than 20 years of experience and competence in the development of pioneering ISDN technology have made the company a worldwide market leader for high demanding ISDN applications. The PrimuX series of high end ISDN server adapters is exported worldwide and ensures communications in all areas of application, ranging from private homes and small offices up to emergency response centres of fire and police departments and high speed trains.

100% fit for prisons: PriSec Prison Security

Beginning in 2009, GERDES started to expand the company's product portfolio into prison security technology and techniques. An additional business segment  that is continuously expanding further and is increasingly responsible for the successful growth of the company.

PriSec is the brand that bundles the GERDES range of advanced communications and information technology specifically designed for prison facilities. Already, the various reliable PriSec inmate telephony solutions set the standard in numerous EU facilities.  In addition the latest PriSec range offers almost the entire portfolio of communication and information technology that modern prison facilities are asking for: mobile device isolation systems, cell light call systems, compact prison cell room multimedia and e-learning solutions as well as VideoVisit, a pioneering, terminal based model for inmates' visits via video conferencing.

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Abbie Forrest, President/CEO - TalkTelio:

"Together with Gerdes AG we develop, produce, install, and market a broad range of the most advanced communication and security products for prison facilities worldwide. Our prison services have been designed to meet and exceed all require- ments in the United States, Europe, United Emirates, Canada, Israel, South America and Asia based on actual interactions and years of industry experience.

Our products bring a new facility environment of secure automation and continual seam- less integration of comprehensive staff, facility, and vendor duty synergies to achieve residual cost savings, benefits, and advance- ments as never before possible."

Trust Points

User-oriented solutions

PriSec offers reliable communication and information technology solutions that seamlessly integrate into prison facilities' daily routine. They are reliable, limitless functional and reporting solutions that have been designed and are being continuously optimised in close cooperation with their future users, i.e. inmates and prison staff.


Maximum benefits for maximum satisfaction

The focus of all PriSec products is to bring maximum use and advantages to all parties acting in their sphere (prison staff, inmates, as well as families and friends of the latter). Because there is only one thing that counts for making a product a really good product which is that everyone can benefit from it.

Keep it simple is the key

Good solutions are simple solutions. Good products are therefore only those products that are intuitive to use, integrate seamlessly into daily routine, relieve workload, result in clear improvements... Products that you could no longer imagine of being without once they are there. According to prison facilities worldwide this is what the brand PriSec stands for.


Gerdes AG = know-how and continuity

Numerous references confirm Gerdes AG to be a reliable partner company, highly regarded for its expertise and fairness in dealing with business partners. The two company founders, Carsten Gerdes (CEO) and Carl-Friedrich Braun (CTO), as well as well as their highly qualified team offer extensive know-how and continuity, two important decision-making criteria when deciding about a partner company for a safety critical service.