The AXD 301 is a new, multiservice, carrier-class ATM switch from Ericsson that can be used in several positions in a network. In its initial release, the AXD 301 is scalable from 10 Gbitrs -- in one subrack -- up to 160 Gbitrs. The AXD 301 supports every service category defined for ATM, as well as integrated support for IPand voice. An advanced buffering mechanism allows services to be mixed without compromising quality. Designed for non-stop operation, the AXD 301 incorporates duplicate hardware and software modularity, which enables individual modules to be upgraded without disturbing traffic. The switching system, which supports both ATM Forum and ITU-T signaling, is easily managed using an embedded Web-based management system. q 1999 Published by Elsevier Science B.V. All rights reserved. Keywords: ATM; Multiservice switching; Carrier-class data communication; Open Telecom Platform; Terabit switching 1. Introduction The AXD 301 is a new asynchronous transfer Z. mode ATM switch...