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Voice mail intervention
| Details |
Inventors: McKee, Stephan W.;
Assignee: Ericsson Inc. (Research Triangle Park, NC)
Primary Examiner: Tsang; Fan
Assistant Examiner: Foster; Roland G.
Attorney, Agent or Firm: Jenkens & Gilchrist, P.C.
A system, method, and apparatus for retrieving a telephone call that has been diverted from an originally called user telephone to an alternative destination, such as a voice mail system or another user telephone. An incoming call directed toward the called user telephone is received at an exchange. The exchange routes the call to the called user telephone and monitors the call to determine if the called user telephone answers the call within a predetermined period. If not, the exchange reroutes the call to the alternative destination. Subsequently, a request is received to retrieve the rerouted call for connection with the originally called user telephone. In response, the exchange connects the call with the originally called user telephone. |
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DETAILED DESCRIPTION The present invention comprises a system, method, and apparatus for retrieving a telephone call that has been diverted by a telecommunications exchange from a called user telephone to a voice mail system or to some other destination.
Generally, a telecommunications exchange includes a switching matrix for routing calls and a central computer for controlling the switching matrix and for controlling the features and services of the exchange.
An incoming call, which is directed toward a particular user station, is received at a telecommunications exchange that serves the user station.
In response, the central computer directs the switching matrix to route the call to a line associated with the user station, thereby causing the user station to ring.
If the call is not answered before the occurrence of some triggering event, such as the elapse of a predetermined period of time, the central computer directs the switching matrix to reroute the call to an alternative destination.
When this rerouting occurs, the original connection to the user station is dropped.
Typically, the alternative destination is a voice mail system, and a voice path is established between the incoming call and a voice mailbox that is associated with the particular user station.
Subsequently, a request is received from the user station to retrieve the rerouted call from the alternative destination.
In response to this request, the central computer directs the switching matrix to route the call, once again, to the user station.
The connection with the alternative destination is dropped, and a voice path is established between the incoming call and the user station.
In a preferred embodiment of the invention, the central computer includes a called line block containing the software unit that handles the user station and a call monitor block containing the software unit that handles the incoming call.
When the call is rerouted, the called line block stores a pointer to the call monitor block.
Then, when the call retrieve request is received, the called line block contacts the call monitor block using the stored pointer and requests that the call monitor block reconnect the call with the user station
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