A microprocessor based communications traffic simulator

A switching laboratory began operations at the Rome Air Development Center (RADC) in 1979. This laboratory is to be used for the experimental study of new switching and system control concepts. A traffic simulator is employed to emulate traffic representative of various user sources. A description is provided of the concept of the traffic simulator, the simulator's performance requirements, the design of the simulator, and the use of an ensemble of microprocessors as a generic source of traffic. The initial version of the traffic simulator currently under development is intended to provide CVSD digitized voice traffic, packet traffic and two types of message traffic. The serial line circuitry makes use of a Z80 microprocessor.