The present invention relates to a method and system for switching over a call connection of a hybrid access terminal to a 1X system if a 1XEV-DO system has a problem when the hybrid access terminal requests a call connection to the 1xEV-DO system. The system in accordance with the present invention...http://www.google.de/patents/US7590091?utm_source=gb-gplus-sharePatent US7590091 - Method and system for switching over to 1x system upon 1xev-do system failure
