Computer communication vendors and users are faced with growing communication systems that must handle voice, data, and soon, video on an integrated basis, eventually through ISDN. Vendors and users must somehow control the operation of this entire system to satisfy customer needs at reasonable cost, by means of sophisticated network management and control systems. Our objective is to identify degraded

The performance of a contention-based TDMA technique is studied in this paper. The frame structure of the time-axis is similar to [1] and [2]. The protocols proposed in [1],[2] and here are all active multiaccess techniques. The protocol in [1] is contention free and suitable for heavy traffic while a contention-based protocol suitable for light traffic is considered in [2]. The protocol to be studied in this paper is also contention in nature and performs considerably better than [2]. This protocol is less complicated than [1] and out-performs [1] unless traffic is very high. Performance analyses, both transient and steady-state, have been successfully completed. Results obtained include average queue length and packet delay, etc. The validity of analysis is also verified by computer simulations.