System and method for transporting a call in a telecommunication network
DC CAFC
First Claim
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1. A method for operating a communications system to handle a call, the method comprising:
- receiving signaling for the call into a signaling processor;
in the signaling processor, processing the signaling to select an identifier for routing the call;
transferring a control message indicating the identifier from the signaling processor;
receiving user communications for the call and the control message into an interworking unit;
in the interworking unit, converting the user communications into asynchronous communications including the identifier in response to the control message;
transferring the asynchronous communications from the interworking unit;
in the interworking unit, monitoring the user communications during the call to detect a call trigger; and
transferring a trigger message from the interworking unit if the call trigger is detected;
receiving and processing the trigger message in the signaling processor; and
transferring another control message from the signaling processor in response to processing the trigger message.
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Abstract
A system and method to detect a call trigger during a call without requiring a service platform to remain connected to the call. A first communication device transmits a call having call signaling and user communications. A signaling processor receives the call signaling from the first communication device and selects a connection to a second communication device. An interworking unit receives the user communications from the first communication device and converts the user communications from a time division multiplex format to asynchronous transfer mode cells that identify a selected connection to the second communication device and transports the user communications to the second communication device. The interworking unit detects a call trigger in the user communications. The interworking unit transmits call trigger data to the signaling processor. The signaling processor processes the call trigger data and, upon validating the call trigger, instructs the interworking unit to transport the user communications to a third communication device. In response thereto, the interworking unit converts the user communications to asynchronous transfer mode cells that identify the selected connection to the third communication device and transports the user communications to the third communication device.
242 Citations
18 Claims
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1. A method for operating a communications system to handle a call, the method comprising:
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receiving signaling for the call into a signaling processor;
in the signaling processor, processing the signaling to select an identifier for routing the call;
transferring a control message indicating the identifier from the signaling processor;
receiving user communications for the call and the control message into an interworking unit;
in the interworking unit, converting the user communications into asynchronous communications including the identifier in response to the control message;
transferring the asynchronous communications from the interworking unit;
in the interworking unit, monitoring the user communications during the call to detect a call trigger; and
transferring a trigger message from the interworking unit if the call trigger is detected;
receiving and processing the trigger message in the signaling processor; and
transferring another control message from the signaling processor in response to processing the trigger message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
receiving the other control message into the interworking unit; and
re-routing the call in response to the other control message.
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3. The method of claim 2 wherein re-routing the call comprises transferring the call to a service platform and the method further comprises providing a service to the call from the service platform.
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4. The method of claim 3 wherein processing the trigger message comprises selecting the service and the method further comprises:
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transferring a service message indicating the service from the signaling processor in response to processing the trigger message; and
receiving the service message into the service platform wherein providing the service comprises providing the service in response to the service message.
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5. The method of claim 1 wherein monitoring the user communications to detect the trigger comprises detecting a tone.
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6. The method of claim 1 wherein monitoring the user communications to detect the trigger comprises detecting a voice command.
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7. The method of claim 1 wherein monitoring the user communications to detect the trigger comprises detecting an on-hook.
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8. The method of claim 1 wherein converting the user communications into asynchronous communications comprises interworking between a time division multiplex format and an asynchronous transfer mode format.
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9. The method of claim 8 wherein interworking between a time division multiplex format and an asynchronous transfer mode format comprises interworking between a DS0 and a VPI/VCI.
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10. A communications system comprising:
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a signaling processor configured to receive signaling for a call, process the signaling to select an identifier for routing the call, transfer a control message indicating the identifier, receive and process a trigger message, and transfer another control message from the signaling processor in response to processing the trigger message; and
an interworking unit configured to receive user communications for the call and the control message, convert the user communications into asynchronous communications including the identifier in response to the control message, transfer the asynchronous communications, monitor the user communications during the call to detect a call trigger, and transfer the trigger message if the call trigger is detected. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
the signaling processor is further configured to process the trigger message to select a service and transfer a service message in response to processing the trigger message; and
the service platform is further configured to receive the service message and provide the service in response to the service message.
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14. The communications system of claim 10 wherein the interworking unit is further configured to detect the trigger by detecting a tone.
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15. The communications system of claim 10 wherein the interworking unit is further configured to detect the trigger by detecting a voice command.
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16. The communications system of claim 10 wherein the interworking unit is further configured to detect the trigger by detecting an on-hook.
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17. The communications system of claim 10 wherein the interworking unit is further configured to convert the user communications into asynchronous communications by interworking between a time division multiplex format and an asynchronous transfer mode format.
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18. The communications system of claim 17 wherein the interworking unit is further configured to interwork-between a time division multiplex format and an asynchronous transfer mode format by interworking between a DS0 and a VPI/VCI.
Specification
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Litigation Data
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Current AssigneeSprint Communications Company LP (Deutsche Telekom AG)
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Original AssigneeSprint Communications Company LP (Deutsche Telekom AG)
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InventorsDuRee, Albert Daniel, Nelson, Tracy Lee, Wiley, William Lyle
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Primary Examiner(s)Chin, Wellington
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Assistant Examiner(s)NGUYEN, STEVEN H D
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Application NumberUS09/080,393Time in Patent Office1,156 DaysField of Search370/270, 370/271, 370/395, 370/396, 370/397, 370/398, 370/399, 370/389, 370/400, 370/401, 370/410, 370/463, 370/466, 370/467, 370/522, 370/524, 370/525, 370/526, 370/351, 370/352, 370/353, 370/354, 370/355, 370/356, 370/426, 370/402, 379/201, 379/207, 379/67, 379/68, 379/93.12US Class Current370/426CPC Class CodesH04J 2203/0046 User Network InterfaceH04J 2203/0066 Signalling, e.g. protocols,...H04L 2012/5614 User Network InterfaceH04L 2012/563 Signalling, e.g. protocols,...H04M 15/00 Arrangements for metering, ...H04M 15/56 for VoIP communicationsH04M 15/62 based on trigger specificationH04M 2215/202 VoIP; Packet switched telep...H04M 3/42289 with carrierprovider select...H04M 7/126 Interworking of session con...H04M 7/129 Details of providing call p...H04M 7/1295 Details of dual tone multip...H04Q 11/0478 Provisions for broadband co...
