About Ostertag DeTeWe Ostertag DeTeWe GmbH is the market leader for ICT solutions and system integration in Germany. We plan, implement and operate strategically relevant telecommunications solutions for your company. Our customers benefit from our nationwide presence: With our comprehensive "on-site" service, we are in your area in the shortest possible time. In addition, we can support you “remotely” at any time. In addition to our strong service, Ostertag DeTeWe customers benefit from a network with permanent added value and holistic solutions for process optimization. As a system integrator, we are manufacturer-independent and continue to offer our own development, OD-Cloud - a cloud solution “Made in Germany” -, managed services, a carrier and provider service - our so-called DeTeWe.net solution - and Unified Communications & Collaboration (UCC) solutions at. Find out more in our flyer! Ostertag DeTeWe services Download contact form Are you interested in our service? Then contact us today! Your name (required field) Your email address (mandatory field) Your phone number reference Your message I hereby consent to the further processing of my data and have read and understood the data protection regulations . By the way… You can also find the latest news on new products, services, promotions and events on our social media channels. Have a look right away. XING LINKEDIN FACEBOOK Email: info@ostertagdetewe.de | Phone: +49 800 3868 100 Home imprint data protection News & Events Adjust cookie settings