Communications system for providing ATM connections and echo cancellation
First Claim
1. A method for operating a communication system to establish communications between a first communication device and an Asynchronous Transfer Mode (ATM) network, wherein the communications system comprises a first interworking unit, a second interworking unit, an echo canceller, and a signaling processor, wherein the first interworking unit is connected to the signaling processor and the second interworking unit, wherein the second interworking unit is connected to the signaling processor and the echo canceller, the method comprising:
- in the first interworking unit, accepting a first DSO from the communication device;
in the signaling processor, receiving signaling related to the first DS0;
in the signaling processor, processing the signaling to select a first ATM virtual connection from the first interworking unit to the second interworking unit, a second DS0 from the second interworking unit to the echo canceller, and a second ATM virtual connection from the second interworking unit to the ATM network;
in the signaling processor, providing a first control instruction to the first interworking unit that identifies the first DSO and the first ATM virtual connection;
in the signaling processor, providing a second control instruction to the second interworking unit that identifies the second ATM virtual connection and at least one of the first ATM virtual connection and the second DS0;
in the first interworking unit, interworking the first DS0 with the first ATM virtual connection;
in the second interworking unit, interworking the first ATM virtual connection with the second DS0 to the echo canceller;
in the echo canceller, cancelling echo from the second DS0 and providing the second DS0 back to the second interworking unit; and
in the second interworking unit, interworking the second DS0 back from the echo canceller with the second ATM virtual connection.
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Accused Products
Abstract
A method and system provides connections to an ATM system and includes selective echo cancellation. The system includes two interworking units, an echo canceller, and a signaling processor. The signaling processor receives and processes signaling to provide connection control instructions to the interworking units. The first interworking unit will accept a connection, and if the connection does not require echo cancellation, interwork the incoming connection with an ATM connection to the ATM system. If the incoming connection requires echo cancellation, the first interworking unit will interwork the incoming connection with an ATM connection to the second interworking unit. The second interworking unit will interwork the ATM connection with another connection to echo cancellation. After echo cancellation, the second interworking unit will interwork the connection from echo cancellation with another ATM connection to the ATM system.
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Citations
18 Claims
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1. A method for operating a communication system to establish communications between a first communication device and an Asynchronous Transfer Mode (ATM) network, wherein the communications system comprises a first interworking unit, a second interworking unit, an echo canceller, and a signaling processor, wherein the first interworking unit is connected to the signaling processor and the second interworking unit, wherein the second interworking unit is connected to the signaling processor and the echo canceller, the method comprising:
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in the first interworking unit, accepting a first DSO from the communication device; in the signaling processor, receiving signaling related to the first DS0; in the signaling processor, processing the signaling to select a first ATM virtual connection from the first interworking unit to the second interworking unit, a second DS0 from the second interworking unit to the echo canceller, and a second ATM virtual connection from the second interworking unit to the ATM network; in the signaling processor, providing a first control instruction to the first interworking unit that identifies the first DSO and the first ATM virtual connection; in the signaling processor, providing a second control instruction to the second interworking unit that identifies the second ATM virtual connection and at least one of the first ATM virtual connection and the second DS0; in the first interworking unit, interworking the first DS0 with the first ATM virtual connection; in the second interworking unit, interworking the first ATM virtual connection with the second DS0 to the echo canceller; in the echo canceller, cancelling echo from the second DS0 and providing the second DS0 back to the second interworking unit; and in the second interworking unit, interworking the second DS0 back from the echo canceller with the second ATM virtual connection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A communication system to establish communications between a first communication device and an Asynchronous Transfer Mode (ATM) network, wherein the communication system comprises:
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a signaling processor that is connected to a first interworking unit and to a second interworking unit and that is operational to receive signaling related to a first DS0, operational to process the signaling to select a first ATM virtual connection from the first interworking unit to the second interworking unit, a second DS0 from the second interworking unit to an echo canceller, and a second ATM virtual connection from the second interworking unit to the ATM network, operational to provide a first control instruction to the first interworking unit that identifies the first DS0 and the first ATM virtual connection, and operational to provide a second control instruction to the second interworking unit that identifies the second ATM virtual connection and at least one of the first ATM virtual connection and the second DS0; the first interworking unit that is operational to accept the first DS0 from the first communication device and operational to interwork the first DS0 with the first ATM virtual connection; the second interworking unit that is connected to the first interworking unit and connected to the echo canceller and that is operational to interwork the first ATM virtual connection with the second DS0 to the echo canceller, and operational to interwork the second DS0 back from the echo canceller with a second ATM virtual connection; and the echo canceller that is operational to cancel echo from the second DS0 and provide the second DS0 back to the second interworking unit.
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Specification