Welcome to DAK Services, Inc. Telephone systems are absolutely integral to your business. We are a full-service telecommunications equipment provider with an emphasis on personal service. Providing sales, service, and installation of new and refurbished telecommunications equipment, the quality of the equipment, system, and support are vital to the success of a business. D.A.K. Services, located in Des Plaines, is the company you need to install or refurbish your phone system. Our wealth of experience and knowledgeable personnel excel at customizing equipment for your most specific needs.