Method and apparatus for improved voice over Internet protocol (VoIP) transmission in a digital network

• US 7,876,758 B2
• Filed: 04/08/2005
• Issued: 01/25/2011
• Est. Priority Date: 04/08/2005
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Agere Systems Incorporated (Broadcom, Inc.)
• Inventors: Hamilton, Christopher W., Bullman, William R.
• Primary Examiner(s): Ryman; Daniel J
• Assistant Examiner(s): BLANTON, JOHN D
• Application Number:
  US11/101,825
• Publication Number:
  US 20060227782A1
• Time in Patent Office: 2,118 Days
• Field of Search: 370/392, 370/401
• US Class Current: 370/392
• CPC Class Codes: H04L 65/103 in the network
• CPC Class Codes: H04L 65/104 in the network
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04M 3/42263 where the same subscriber uses different terminals, i.e. nomadism
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42

Abstract

Voice services are provided in a network node of a digital networking system. A service signal is provided to at least one user device. One or more voice packets are received from the at least one user device. The one or more voice packets are processed, and transmitted to one or more destinations determined in the packet processing.

Claims

1. In a network node in a central office of a digital networking system, a method of providing voice services, the method comprising the steps of:

providing a service signal to at least one user device through each of a plurality of gateways, the at least one user device and the plurality of gateways being external to the central office;

receiving one or more voice packets from the at least one user device through at least one of the plurality of gateways;

processing the one or more voice packets; and

transmitting the one or more voice packets to one or more destinations determined in the processing step;

wherein the network node in the central office comprises an uplink card, the uplink card comprising a network processor having an associated voice packet detection and processing element;

wherein the network node in the central office further comprises one or more line cards coupled to the uplink card, each of the one or more line cards comprising modem circuitry adapted to communicate with the at least one user device through the at least one of the plurality of gateways, and each of the one or more line cards further comprising at least one of a backplane device and a bridge device, the at least one of the backplane device and the bridge device being coupled to a corresponding device of the uplink card, the uplink card comprising at least one of a backplane device and a switching fabric;

wherein the processing step is implemented in the voice packet detection and processing element of the network node in the central office; and

wherein voice packets received from the at least one user device via the modem circuitry of the network node in the central office are detected in the voice packet detection and processing element of the network node in the central office and transmitted to corresponding destinations via the network processor of the network node in the central office.

2. The method of claim 1, wherein the step of providing a service signal to at least one user device comprises the steps of:

detecting a service request from the at least one user device;

forwarding the service request to a registration system of the at least one network node; and

providing service on the digital networking system to the at least one user device.

3. The method of claim 2, wherein the step of providing service on the digital networking system comprises the steps of:

determining if the registration system recognizes the at least one user device; and

forwarding service grant notification from the registration system when the registration system recognizes the at least one user device.

4. The method of claim 3, wherein the step of determining if the registration system recognizes the at least one user device comprises the steps of:

inspecting one or more service parameters (SPs) of the service request; and

recognizing at least one of a user and one or more user attributes from the one or more SPs.

5. The method of claim 1, wherein the step of processing the one or more voice packets comprises the step of detecting at least one Internet protocol (IP) header of the one or more voice packets.

6. The method of claim 5, wherein the at least one IP header is stored and sent by the at least one user device.

7. The method of claim 1, wherein, in the step of transmitting the one or more voice packets, the voice packets are transmitted in accordance with destination information from at least one IP header of the one or more voice packets.

8. The method of claim 7, wherein the at least one IP header comprises one or more of a destination carrier tag, an owner identification, and global positioning system (GPS) location information.

9. The method of claim 1, wherein the step of processing the one or more voice packets comprises the step of prioritizing the one or more voice packets in association with other broadband traffic handled by the at least one network node.

10. The method of claim 9, wherein, in the step of transmitting the one or more voice packets, the one or more voice packets are transmitted in an order determined by the prioritization.

11. The method of claim 9, wherein the step of prioritizing the one or more voice packets results in a shortest delay for voice services compared to the other broadband traffic.

12. The method of claim 1, wherein the network node comprises at least one of a digital subscriber line (DSL) aggregation mux, an Ethernet switch, a broadband loop carrier, and an optical networking unit.

13. An apparatus for providing voice services in a network node in a central office of a digital networking system, the apparatus comprising:

circuitry for providing a service signal to at least one user device through each of a plurality of gateways, the at least one user device and the plurality of gateways being external to the central office;

circuitry for receiving one or more voice packets from the at least one user device through at least one of the plurality of gateways;

circuitry for processing the one or more voice packets; and

circuitry for transmitting the one or more voice packets to one or more destinations determined by the processing circuitry;

wherein the network node in the central office comprises modem circuitry and a network processor, the network processor having an associated voice packet detection and processing element;

wherein the circuitry for providing a service signal and the circuitry for receiving one or more voice packets comprises the modem circuitry of the network node in the central office;

wherein the circuitry for processing the one or more voice packets comprises the voice packet detection and processing element of the network node in the central office;

wherein the circuitry for transmitting the one or more voice packets to one or more destinations comprises the network processor of the network node in the central office; and

wherein voice packets received from the at least one user device via the modem circuitry of the network node in the central office are detected in the voice packet detection and processing element of the network node in the central office and transmitted to corresponding destinations via the network processor of the network node in the central office;

wherein the network node in the central office comprises an uplink card, the uplink card comprising the network processor and the associated voice packet detection and processing element;

wherein the network node in the central office further comprises one or more line cards coupled to the uplink card, each of the one or more line cards comprising modem circuitry adapted to communicate with the at least one user device through the at least one of the plurality of gateways, and each of the one or more line cards further comprising at least one of a backplane device and a bridge device, the at least one of the backplane device and the bridge device being coupled to a corresponding device of the uplink card, the uplink card comprising at least one of a backplane device and a switching fabric.

14. The apparatus of claim 13, wherein the circuitry for providing a service signal to at least one user device comprises:

circuitry for detecting a service request from the at least one user device;

circuitry for forwarding the service request to a registration system of the at least one network node; and

circuitry for providing service on the digital networking system to the at least one user device.

15. The apparatus of claim 13, wherein the circuitry for processing the one or more voice packets comprises circuitry for detecting at least one Internet protocol (IP) header of the one or more voice packets.

16. The apparatus of claim 13, wherein the circuitry for processing the one or more voice packets comprises circuitry for prioritizing the one or more voice packets in association with other broadband traffic handled by the at least one network node.

17. A network node in a central office of a digital networking system, the network node in the central office comprising an uplink card, the uplink card comprising an integrated circuit device, wherein the integrated circuit device is configured to provide a service signal to at least one user device through each of a plurality of gateways, the at least one user device and the plurality of gateways being external to the central office, receive one or more voice packets from the at least one user device through at least one of the plurality of gateways, process the one or more voice packets, and transmit the one or more voice packets through the digital networking system to one or more destinations determined in the processing operation;

wherein the integrated circuit device comprises a network processor having an associated voice packet detection and processing element;

wherein the network node in the central office further comprises one or more line cards coupled to the uplink card, each of the one or more line cards comprising modem circuitry adapted to communicate with the at least one user device through the at least one of the plurality of gateways, and each of the one or more line cards further comprising at least one of a backplane device and a bridge device, the at least one of the backplane device and the bridge device being coupled to a corresponding device of the uplink card, the uplink card comprising at least one of a backplane device and a switching fabric; and

wherein voice packets received from the at least one user device via the modem circuitry of the network node in the central office are detected in the voice packet detection and processing element of the network node in the central office and transmitted to corresponding destinations via the network processor of the network node in the central office.

18. The network node of claim 17, wherein the integrated circuit device is further configured to detect a service request from the at least one user device, and provide service on the digital networking system to the at least one user device.

19. The network node of claim 17, wherein the integrated circuit device is further configured to detect at least one Internet protocol (IP) header of the one or more voice packets.

20. The network node of claim 17, wherein the integrated circuit device is further configured to prioritize the one or more voice packets in association with other broadband traffic handled by the network node.

21. The network node of claim 20, wherein the prioritization of the one or more voice packets results in a shortest delay for voice services compared to the other broadband traffic.

22. The network node of claim 21, wherein the integrated circuit device is configured to inspect one or more service parameters (SPs) of a service request, and recognize at least one of a user and one or more user attributes from the one or more SPs.

23. A digital networking system comprising:

at least one user device configured to transmit one or more voice packets; and

a central office comprising at least one network node, the at least one network node comprising an integrated circuit device configured to provide a service signal to at least one user device through each of a plurality of gateways, the at least one user device and the plurality of gateways being external to the central office, receive one or more voice packets from the at least one user device through at least one of the plurality of gateways, process the one or more voice packets, and transmit the one or more voice packets through the digital networking system to one or more destinations determined in the processing operation;

wherein the network node in the central office comprises an uplink card, the uplink card comprising a network processor having an associated voice packet detection and processing element;

wherein the network node in the central office further comprises one or more line cards coupled to the uplink card, each of the one or more line cards comprising modem circuitry adapted to communicate with the at least one user device through the at least one of the plurality of gateways, and each of the one or more line cards further comprising at least one of a backplane device and a bridge device, the at least one of the backplane device and the bridge device being coupled to a corresponding device of the uplink card, the uplink card comprising at least one of a backplane device and a switching fabric; and

wherein voice packets received from the at least one user device via the modem circuitry of the network node in the central office are detected in the voice packet detection and processing element of the network node in the central office and transmitted to corresponding destinations via the network processor of the network node in the central office.