This paper describes distributed communications based on a new paradigm of middleware platform called the typed bus (TB) platform. While traditional middleware platforms provide the same type of communication paths between distributed objects, the TB platform provides typed buses, which are communication paths differentiated according to application's communication characteristics. Each typed bus represents unique communication type and controls communications between distributed objects according to its type as a hardware system bus constrains communication between hardware components. Distributed communications are achieved via typed buses, which check if the communications are compliant with their types. In this paper we propose the architecture of the TB platform, introduce TB Type Definition Language used to specify a typed bus's type, and describe an implementation of our platform.