The prior art for the switching of ATM cells to an equivalent circuit involves the problem of incorrect switching operations. The method provides a remedy for this by virtue of the fact that when there is a fault on a service link an equivalent circuit switching operation onto just one standby link is...http://www.google.de/patents/US6580688?utm_source=gb-gplus-sharePatent US6580688 - Switching transmission units to an equivalent circuit for the purposes of bidirectional asynchronous cell transfer
