Method and apparatus for providing a look ahead feature for enhanced call forwarding in a telecommunications system
First Claim
1. A method of call forwarding in a communications system in which a plurality of subscriber stations are interconnected through a switch for communication with one another, said method comprising the steps of:
- receiving in said switch a call from a first station of said plurality of subscriber stations, said call initially addressed to a second station of said plurality of subscriber stations;
establishing a through connection between said first station and said second station;
alerting said second station;
providing a ring tone to said first station;
disconnecting said through connection between said first station and said second station;
performing a call forwarding setup to a third station of said plurality of subscriber stations;
determining a result of said call forwarding setup; and
forwarding said call in accordance with said call forwarding setup result, wherein said step of forwarding further comprises the step of re-establishing said through connection between said first station and said second station in response to a determination that the result of said call forwarding setup was unsuccessful.
1 Assignment
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Accused Products
Abstract
A method and apparatus for providing an enhanced Call Forwarding Don'"'"'t Answer feature is disclosed. When an originating address calls a base address assigned the Call forwarding Don'"'"'t Answer feature and the call is forwarded to a remote address, a Look Ahead feature is implemented. The Look Ahead feature determines if a call setup to a remote address is successful, unsuccessful or points out a feature assigned to the remote line. The originating address is provided with ring tone during the call setup. The call setup results are then used to make appropriate connections to implement the functions of the feature while providing a steady ring tone to the originating address.
64 Citations
32 Claims
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1. A method of call forwarding in a communications system in which a plurality of subscriber stations are interconnected through a switch for communication with one another, said method comprising the steps of:
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receiving in said switch a call from a first station of said plurality of subscriber stations, said call initially addressed to a second station of said plurality of subscriber stations; establishing a through connection between said first station and said second station; alerting said second station; providing a ring tone to said first station; disconnecting said through connection between said first station and said second station; performing a call forwarding setup to a third station of said plurality of subscriber stations; determining a result of said call forwarding setup; and forwarding said call in accordance with said call forwarding setup result, wherein said step of forwarding further comprises the step of re-establishing said through connection between said first station and said second station in response to a determination that the result of said call forwarding setup was unsuccessful. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus for call forwarding in a communications system in which a plurality of subscriber stations are interconnected through a switch for communication with one another, said apparatus comprising:
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means for receiving in said switch a call from a first station of said plurality of subscriber stations, said call initially addressed to a second station of said plurality of subscriber stations; means for establishing a through connection between said first station and said second station; means for alerting said second station; means for providing a ring tone to said first station; means for disconnecting said through connection between said first station and said second station; means for performing a call forwarding setup to a third station of said plurality of subscriber stations; means for determining a result of said call forwarding setup; and means for forwarding said call in accordance with said call forwarding setup result, wherein said means for forwarding further comprises means for re-establishing said through connection between said first station and said second station in response to a determination that the result of said call forwarding setup was unsuccessful. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification