A method and system for providing rollover service from a competitive local exchange carrier (CLEC) is disclosed. A routing table is provided which includes call reference values stored within a local bypass system. An incoming call is checked against the call reference values to determine if a call...http://www.google.se/patents/US6603850?utm_source=gb-gplus-sharePatent US6603850 - Telephone line rollover service for ATM/ADSL based systems
