According to a system for switched cutover with paced transition, subscribers are transitioned to a new communication system while the capacity needed by the cutover facility is minimized. A cutover facility between a pre-cut switch and a post-cut switch for transitioning a first and a second...http://www.google.fr/patents/US5848144?utm_source=gb-gplus-shareBrevet US5848144 - Switch cutover with paced transition
