PERFORMANCE EVALUATION OF ADAPTATION FUNCTIONS IN THE ATM ENVIRONMENT

The paper models and evaluates key design issues for the Adaptation La yer in ATM networks. The role and efficient design of the adaptation l ayer is crucial for future based on ATM. We concentrate on packet-mode adaptation services analyzing and simulating relevant protocols emplo yed for narrowband ISDN signaling and packet data. Processing and tran smission resources are modeled. In particular we investigate the perfo rmance of software based solution resident in microprocessors and inte rfaces to the ATM world via a generic interface component. This set-up which is currently under development is found adequate to handle narr owband ISDN signaling and data traffic. It offers a cost effective and readily available solution for the transition phase towards fully cus tomized broadband components.