Performance parameters of ATM networks with bursts of errors

In this paper we present the calculation of the error performance of a poin t-to-point ATM connection transported on an STS-3c SONET (SDH STM-1) interf ace. The ATM layer performance parameters calculated are Cell Loss Ratio (C LR), Cell Error Ratio (CER), and Severely Errored Cell Block Ratio (SECBR). Statistics of consecutive errored and lost cells are also calculated for e ach run of the simulation. The physical layer performance parameters such a s Bit Error Ratio (BER), Errored Second Ratio (ESR), and Severely Errored S econd Ratio (SESR) are compared with corresponding objective values in G.82 6. The bursty nature of errors in physical communication channels is descri bed by the Hidden Markov Model (HMM) which is obtained from the experimenta l data. The importance of using this model is demonstrated by the simulatio n results. The ATM performance for channels with independent errors differs significantly from the ATM performance for channels with bursts of errors and equal bit error ratios.