Old Fashion Service - High Tech Solutions Since 1980, KCG Communications has provided exceptional business telecommunications systems and service for over 4,000 clients in the Denver area. We offer a wide range of communication products and services starting with basic traditional digital business telephone systems, to the newest VoIP Technology. The NEC Communications Server has over 150 standard features plus VoIP, Multi Site Networking, call management systems, CTI integration and Voice Unified messaging. Customers of KCG Communications benefit from dealing with a local telecommunications company backed by the national manufacturers it represents. Our staff of certified, trained technicians and office support personnel makes certain that you get the old fashion service you can depend on. Let us be your one-stop shop for your voice, data and long distance circuits. We do comparisons between multiple carriers to get you the lowest and best options for your business phone lines.