ATM gateway system
First Claim
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1. A method of handling a telecommunications call, the method comprising:
- receiving an initial address message for the call in a call processor;
receiving asynchronous communications for the call in a gateway wherein the asynchronous communications for the call include a first virtual identifier for routing the asynchronous communications;
in the call processor, processing the initial address message to select a second virtual identifier for routing the asynchronous communications;
transferring an instruction indicating the second virtual identifier from the call processor to the gateway;
in the gateway, modifying the first virtual identifier in the asynchronous communications to the second virtual identifier; and
transferring the asynchronous communications including the second virtual identifier from the gateway, wherein the call processor and the gateway do not include a switching fabric.
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Abstract
The invention is a system for modifying the VPI/VCIs in ATM cells transferred between two ATM systems on a call-by-call basis. A signaling processor receives signaling for the call and selects a new VPI/VCI for the call. The signaling processor generates a control message that identifies the old and new VPI/VCIs and transfers the control message to an ATM gateway. The ATM gateway modifies the old VPI/VCI in the ATM cells to the new VPI/VCI.
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Citations
30 Claims
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1. A method of handling a telecommunications call, the method comprising:
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receiving an initial address message for the call in a call processor;
receiving asynchronous communications for the call in a gateway wherein the asynchronous communications for the call include a first virtual identifier for routing the asynchronous communications;
in the call processor, processing the initial address message to select a second virtual identifier for routing the asynchronous communications;
transferring an instruction indicating the second virtual identifier from the call processor to the gateway;
in the gateway, modifying the first virtual identifier in the asynchronous communications to the second virtual identifier; and
transferring the asynchronous communications including the second virtual identifier from the gateway, wherein the call processor and the gateway do not include a switching fabric. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A telecommunications system for handling a call, wherein the call includes an initial address message and asynchronous communications, wherein the asynchronous communications include a first virtual identifier for routing, the telecommunications system comprising:
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a call processor configured to receive the initial address message for the call, process the initial address message to select a second virtual identifier for routing asynchronous communications, and transfer an instruction indicating the second virtual identifier; and
a gateway coupled to the call processor and configured to receive the instruction, to receive the asynchronous communications for the call that include the first virtual identifier for routing the asynchronous communications, modify the first virtual identifier in the asynchronous communications to the second virtual identifier in response to the instruction, and transfer the asynchronous communications including the second virtual identifier, wherein the call processor and the gateway do not include a switching fabric. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of operating a telecommunications system for handling a call, the method comprising the steps of:
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receiving communications with a header for the call into a first gateway, wherein the header includes a first identifier;
receiving a called number for the call into a first call processor;
in the first call processor, processing the called number to select a second identifier for routing the communications, and transferring an instruction indicating the second identifier;
in the first gateway, receiving the instruction indicating the second identifier, modifying the first identifier in the communications to the second identifier in response to the instruction indicating the second identifier, and transferring the communications including the second identifier, wherein the first call processor and the first gateway do not comprise an asynchronous transfer mode switch; and
in a first routing system, receiving the communications with the second identifier and transferring the communications based on the second identifier. - View Dependent Claims (22, 23, 24, 25, 27, 28, 29, 30)
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26. A telecommunications system for handling a call, the telecommunications system comprising:
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a first gateway configured receive communications with a header for the call, wherein the header includes a first identifier;
a first call processor configured to receive a called number for the call, process the called number to select a second identifier for routing the communications, and transfer an instruction indicating the second identifier;
the first gateway being further configured to receive the instruction indicating the second identifier, modify the first identifier in the communications to the second identifier in response to the instruction indicating the second identifier, and transfer the communications including the second identifier, wherein the first call processor and the first gateway do not comprise an asynchronous transfer mode switch; and
a first routing system configured to receive the communications with the second identifier and transfer the communications based on the second identifier.
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Specification