System and method for providing lifeline telecommunication service to line-powered customer premises equipment

• US 7,245,583 B1
• Filed: 09/04/2001
• Issued: 07/17/2007
• Est. Priority Date: 09/04/2001
• Status: Expired due to Term

• Current Assignee: Ribbon Communications Operating Company, Inc. (Ribbon Communications, Inc.)
• Original Assignee: Genband Incorporated (Ribbon Communications, Inc.)
• Inventors: Renucci, Peter J.
• Primary Examiner(s): Pham; Chi
• Assistant Examiner(s): Jagannathan; Melanie
• Application Number:
  US09/947,038
• Time in Patent Office: 2,142 Days
• Field of Search: 370217-228, 370/248, 370352-356, 370/465, 379/27.06, 379/27.01, 379/93.09, 379/413
• US Class Current: 370/217
• CPC Class Codes: H04Q 11/04 for time-division multiplexing H04Q11/0001 takes precedence
• CPC Class Codes: H04Q 2213/13039 Asymmetrical two-way transmission, e.g. ADSL, HDSL
• CPC Class Codes: H04Q 2213/13082 Power supply via phantom line
• CPC Class Codes: H04Q 2213/13166 Fault prevention
• CPC Class Codes: H04Q 2213/13202 Network termination [NT]

Abstract

A system for providing lifeline telecommunication service includes a telecommunication interface, a data packet service module, an analog signal service module, a power generator, and a switch. The telecommunication interface receives telecommunication information from a telecommunication switch. The data packet service module receives the telecommunication information from the telecommunication interface and generates data packets for communicating the telecommunication information over a local loop circuit in a first mode of operation. The analog signal service module receives the telecommunication information from the telecommunication interface and generates an analog signal for communicating the telecommunication information over the local loop circuit in a second mode of operation. The power generator generates a first voltage. The switch selects the first voltage for communication to the local loop circuit in the first mode of operation and selects the analog signal for communication to the local loop circuit in the second mode of operation.

Claims

1. A system for providing lifeline telecommunication service, comprising:

network equipment operable to receive telecommunication information from a telecommunication switch, to generate data packets for communicating the telecommunication information over a local loop circuit in a first mode of operation, and to generate an analog signal for communicating the telecommunication information over the local loop circuit in a second mode of operation, the network equipment further operable to apply a first voltage to the local loop circuit in the first mode of operation and to apply a second voltage to the local loop circuit in the second mode of operation; and

an integrated access device (IAD) operable to receive the first voltage and the data packets from the local loop circuit and to use the first voltage to provide power for processing the data packets in the first mode of operation.

2. The system of claim 1, wherein the network equipment is further operable to determine whether it can communicate with the customer premises equipment using data packets, to select the first mode of operation in response to determining that it can communicate with the customer premises equipment using data packets, and to select the second mode of operation in response to determining that it cannot communicate with the customer premises equipment using data packets.

3. The system of claim 1, wherein the network equipment comprises:

a data packet service module operable to generate the data packets in the first mode of operation;

a power generator operable to generate the first voltage;

an analog signal service module operable to generate the analog signal and the second voltage in the second mode of operation; and

a switch operable to select the first voltage for communication to the local loop circuit in the first mode of operation and to select the analog signal and second voltage for communication to the local loop circuit in the second mode of operation.

4. The system of claim 3, wherein the power generator and the switch are located in a single chassis.

5. The system of claim 1, wherein the IAD comprises:

a processing module operable to process the data packets to generate a second analog signal for communicating the telecommunication information in the first mode of operation; and

a power extractor operable to use the first voltage to provide power to the processing module in the first mode of operation.

6. The system of claim 1, wherein the second voltage is sufficient to power POTS equipment that communicates telecommunication information with the network equipment using the analog signal.

7. A system for providing lifeline telecommunication service, comprising:

a telecommunication interface operable to receive telecommunication information from a telecommunication switch;

a data packet service module operable to receive the telecommunication information from the telecommunication interface and to generate data packets for communicating the telecommunication information over a local loop circuit in a first mode of operation;

an analog signal service module operable to receive the telecommunication information from the telecommunication interface and to generate an analog signal for communicating the telecommunication information over the local loop circuit in a second mode of operation;

a power generator operable to generate a first voltage; and

a switch operable to select the first voltage for communication to the local loop circuit in the first mode of operation and to select the analog signal for communication to the local loop circuit in the second mode of operation.

8. The system of claim 7, further comprising a management module operable to determine whether the data packet service module can communicate with customer premises equipment using the data packets, to select the first mode of operation in response to determining that it can communicate with the customer premises equipment using the data packets, and to select the second mode of operation in response to determining that it cannot communicate with the customer premises equipment using the data packets.

9. The system of claim 8, wherein the management module determines that the data packet service module cannot communicate data packets with the customer premises equipment if the data packet service module cannot maintain a virtual circuit between the gateway and the customer premises equipment.

10. The system of claim 7, wherein the analog signal service module is remotely coupled to the telecommunication interface using a digital link.

11. The system of claim 7, wherein the analog signal service module, the power generator, and the switch are located in a single chassis.

12. The system of claim 7, wherein the power generator and the switch are located remotely from a central office.

13. The system of claim 7, further comprising:

a processing module operable to receive the data packets from the local loop circuit and to process the data packets to communicate the telecommunication information to a subscriber device in the first mode of operation;

a power extractor operable to receive the first voltage from the local loop circuit and to use the first voltage to power the processing module in the first mode of operation; and

a bypass switch operable to communicate the analog signal to the subscriber device in the second mode of operation.

14. The system of claim 7, wherein the analog signal service module applies a second voltage to the local loop circuit with the analog signal in the second mode of operation.

15. A method of providing lifeline telecommunication service, comprising:

receiving telecommunication information from a telecommunication switch;

generating data packets for communicating the telecommunication information over a local loop circuit in a first mode of operation;

generating an analog signal for communicating the telecommunication information over the local loop circuit in a second mode of operation;

generating a first voltage for powering customer premises equipment;

selecting the first voltage for communication to the local loop circuit in the first mode of operation; and

selecting the analog signal for communication to the local loop circuit in the second mode of operation.

16. The method of claim 15, further comprising:

creating a virtual circuit with customer premises equipment;

selecting the first mode of operation in response to maintaining the virtual circuit with the customer premises equipment; and

selecting the second mode of operation in response to losing the virtual circuit with the customer premises equipment.

17. The method of claim 15, further comprising:

supplying power to an integrated access device (IAD) using the first voltage on the local loop circuit in the first mode of operation; and

supplying power to a subscriber device using the analog signal from the local loop circuit in the second mode of operation.

18. The method of claim 15, further comprising:

communicating the analog signal from the local loop circuit to a subscriber device in the second mode of operation; and

powering the subscriber device using the analog signal.