Hybrid switching architecture having dynamically assigned switching models for converged services platform
First Claim
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1. A method for controlling calls in a telecommunication system comprising the steps of:
- providing a first switching model which does not support self-routing connectionless communications and in which call control signaling and media switching are effectively coupled;
providing a second switching model which does support self-routing connectionless communications and in which call control signaling and media switching are effectively decoupled, said telecommunications system being configured to switch no bearer traffic during said second switching model; and
at the initiation of a call or during the progress of the call assigning one of said first and second switching models to said call whereby thereafter the call is processed in accordance with the assigned switching model.
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Abstract
A converged services platform based on a hybrid switching architecture in which either a traditional switching model or a soft-switching model may be selected on a call-by-call basis. In addition, the assigned switching model may be dynamically changed while a call is in progress in order to gain access to desired media services while avoiding network latencies and undesirable service delays.
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Citations
47 Claims
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1. A method for controlling calls in a telecommunication system comprising the steps of:
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providing a first switching model which does not support self-routing connectionless communications and in which call control signaling and media switching are effectively coupled; providing a second switching model which does support self-routing connectionless communications and in which call control signaling and media switching are effectively decoupled, said telecommunications system being configured to switch no bearer traffic during said second switching model; and at the initiation of a call or during the progress of the call assigning one of said first and second switching models to said call whereby thereafter the call is processed in accordance with the assigned switching model. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for controlling calls in a telecommunications system configured as an interactive voice response (IVR) system, said method comprising the steps of:
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providing a first switching model in which call control signaling and media switching are effectively coupled; providing a second switching model in which call control signaling and media switching are effectively decoupled; at the initiation of a call or during the progress of the call, assigning one of said first and second switching models to said call; providing a two-way RTP voice path from a first session initiation protocol end-point to a second telecommunication system having said interactive voice response system; establishing a two-way TDM voice path between said interactive voice response system and with said second telecommunication system; obtaining DTMF digits from said interactive voice response system; after information is obtained from said interactive voice response system; i) issuing messages to a second session initiation protocol end-point; ii) establishing a two-way RTP voice path between said first session initiation protocol end-point and said second session initiation protocol end-point; and iii) releasing said channel established between said interactive voice response system and said second telecommunication system; and establishing a two-way RTP voice path between said first end-point and said second end-point.
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21. A method for controlling calls in a telecommunication system comprising the steps of:
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providing a first switching model in which call control signaling and media switching are effectively coupled; providing a second switching model in which call control signaling and media switching are effectively decoupled; at the initiation of a call or during the progress of the call, assigning one of said first and second switching models to said call, and wherein assigning said second switching model includes establishing a two-way RTP voice path between a first session initiation protocol end-point and a second session initiation protocol end-point, by said telecommunication system performing the following; i) receiving a message from said first end-point and in response thereto, issuing a Request for Service with a data message to an associated host, with Session Description Protocol data of said first end-point contained within said data message, via an application programming interface with said host; ii) receiving a Route Control message generated by said host, and in response signaling a call to said second end-point using an available voice over IP channel; iii) issuing to said second end-point an invite message, which includes said first end-point Session Description Protocol as data, and waiting for said second end-point to return a ringing message; iv) in response, issuing a ringing message to said first end-point and subsequently receiving from said second end-point, an OK message indicating that said second end-point is available to accept said call initiated by said first end-point; v) issuing a message to said host with information regarding said first and second end-points and waiting for said host to respond with a message instructing said telecommunication system to process said call in accordance with said second with said second switching model; and vi) issuing further messages to establish a two-way RTP voice path between said first and second end-points. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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29. A telecommunication system comprising:
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switching hardware having circuitry for operating under a first switching model and in which call control signaling and media switching are effectively coupled, and a second switching model which does support self-routing connectionless communications and in which call control signaling and media switching are effectively decoupled, said telecommunication system being configured to switch no bearer traffic; and a processor to assign one of said first and second switching models to said call at the initiation of a call or during the progress of the call so that thereafter the call is processed in accordance with the assigned switchiing model. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A telecommunication system comprising:
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means for providing a first switching model which does not support self-routing connectionless communications and in which call control signaling and media switching are effectively coupled; means for providing a second switching model which does support self-routing connectionless communications and in which call control signaling and media switching are effectively decoupled, said telecommunications system being configured to support no bearer traffic during said secondary switching model; and means for assigning one of said first and second switching models to said call at the initiation of a call or during the progress of the call so that thereafter the call is processed in accordance with the assigned switching model.
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Specification