Local Area Radio Intercom Networks (LARIN)

This paper describes a radio intercom system concept employing Local Area Network (LAN) bus concepts and technologies which provide integrated audio and data switching capabilities. The unique requirements of radio intercom systems and the need for a deterministic and periodic bus access protocol are defined. An approach to a Local Area Radio Intercom Network (LARIN) with a modified Time Division Multiple Access (TDMA) protocol is presented. It is concluded that distributed bus type systems using appropriate protocols can provide cost effective integrated local audio/data switching and distribution systems. The intent of this paper is to stimulate interest and discussion in a local area integrated digital audio and data network bus standard.