| 摘要 |
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 to receive a call, and, when both are available and not busy, notifying the caller that the destination is available and subsequently making the connection. The system is particularly adapted for use with cellular networks wherein destination numbers are frequently unavailable because they are off, out of range, or due to insufficient network resources. The system does not rely upon cellular registration to determine if a destination is available but instead attempts to access the destination direction directly to ensure that the call can actually be completed before the caller is notified.
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