A method for connecting a caller to a called destination when the destination is initially unreachable comprises the steps of receiving in a communication network a call origination from the caller to the unreachable destination, determining if the caller and destination are not busy and also are available...http://www.google.es/patents/US6804509?utm_source=gb-gplus-sharePatente US6804509 - Method and system for notifying a caller that a cellular phone destination is available
Method and system for notifying a caller that a cellular phone destination ...
