System and method for allocating overhead voltage in the transmission of pots and XDSL signals

• US 6,748,078 B1
• Filed: 06/08/1999
• Issued: 06/08/2004
• Est. Priority Date: 12/18/1998
• Status: Expired due to Term

• Current Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Posthuma, Carl Robert
• Primary Examiner(s): NGUYEN, DUC MINH
• Application Number:
  US09/328,102
• Time in Patent Office: 1,827 Days
• Field of Search: 379/399.01, 379/93.01, 379/93.05, 379/93.08, 379/93.09, 379/93.29, 379/93.32, 379/93.34, 379/322-324
• US Class Current: 379/413
• CPC Class Codes: H04M 11/062 using different frequency bands for speech and other data
• 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 2213/1308 Power supply
• CPC Class Codes: H04Q 2213/1309 Apparatus individually associated with a subscriber line, line circuits
• CPC Class Codes: H04Q 2213/13096 Digital apparatus individually associated with a subscriber line, digital line circuits
• CPC Class Codes: H04Q 2213/13106 Microprocessor, CPU
• CPC Class Codes: H04Q 2213/1319 Amplifier, attenuation circuit, echo suppressor
• CPC Class Codes: H04Q 2213/13199 Modem, modulation
• CPC Class Codes: H04Q 2213/1322 PBX
• CPC Class Codes: H04Q 2213/13292 Time division multiplexing, TDM
• CPC Class Codes: H04Q 2213/1332 Logic circuits
• CPC Class Codes: H04Q 2213/13389 LAN, internet

Abstract

A communication system and method for allocating overhead voltage between a telephonic switch and a user device is described. A line driver is located in the telephonic switch and is coupled to the user device. The line driver is in one of a plurality of communication states. A processor, coupled to the line driver, allocates the overhead voltage in response to the communication state of the line driver.

Claims

1. A method for allocating overhead voltage in a communication system for transmission of POTS and XDSL signals comprising the steps of:

determining a communication state of a call for the communication system; and

allocating the overhead voltage in response to the communication state of the call;

wherein the step of determining a communication state of a call further includes the steps of

determining a loop condition state for the communication system,

determining the state of the POTS signal, and

determining the state of the XDSL signal in response to the loop condition.

2. The method of claim 1 wherein the loop condition state comprises

a high impedance state and

a low impedance state.

3. The method of claim 1 wherein the state of the POTS signal comprises

an on hook state and

an off hook state.

4. The method of claim 1 wherein the state of the XDSL signal comprises

a full power mode state,

a low power mode state,

a sleep with pilot mode state, and

a sleep mode state.

5. A method for allocating overhead voltage in a communication system for transmission of POTS and XDSL signals comprising the steps of:

determining a loop condition for the communication system;

determining the state of the POTS signal;

determining the state of the XDSL signal in response to the loop condition; and

allocating the overhead voltage in response to the loop condition, state of the POTS signal, and state of the XDSL signal.

6. The method of claim 5 wherein the loop condition state comprises

a high impedance state and

a low impedance state.

7. The method of claim 5 wherein the state of the POTS signal comprises

an on hook state and

an off hook state.

8. The method of claim 5 wherein the state of the XDSL signal comprises

a full power mode state,

a low power mode state,

a sleep with pilot mode state, and

a sleep mode state.

9. A communication system for allocating overhead voltage between a telephonic network device and a user device comprising:

a line driver, located in the telephonic switch, in signal communication with the user device wherein the line driver is in one of a plurality of communication states; and

a processor in signal communication with the line driver, wherein the processor allocates the overhead voltage in response to the communication state of the line driver;

wherein the plurality of communication states comprises

a plurality of POTS states,

a plurality of XDSL states, and

a plurality of loop condition states.

13. The communication system of claim 9 wherein the telephonic network device is a telephonic switch.

14. The communication system of claim 9 wherein the telephonic network device is a digital loop carrier.

15. The communication system of claim 9 wherein the telephonic network device is a digital subscriber line access multiplexer.

10. A communication system for allocating overhead voltage between a telephonic network device and a user device comprising:

a line driver, located in the telephonic switch, in signal communication with the user device wherein the line driver is in one of a plurality of communication states; and

a processor in signal communication with the line driver, wherein the processor allocates the overhead voltage in response to the communication state of the line driver;

wherein the plurality of communication states comprises a plurality of POTS states and a plurality of XDSL states, wherein the plurality of POTS states comprises

an on hook state and

an off hook state.

23. The communication system of claim 10 wherein the plurality of XDSL states comprises

a full power mode state,

a low power mode state,

a sleep with pilot mode state, and

a sleep mode state.

11. A communication system for allocating overhead voltage between a telephonic network device and a user device comprising:

a line driver, located in the telephonic switch, in signal communication with the user device wherein the line driver is in one of a plurality of communication states; and

a processor in signal communication with the line driver, wherein the processor allocates the overhead voltage in response to the communication state of the line driver;

wherein the plurality of communication states comprises a plurality of XDSL states, wherein the plurality of XDSL states comprises

a full power mode state,

a low power mode state,

a sleep with pilot mode state, and

a sleep mode state.

20. The communication system of claim 11 wherein the telephonic network device is a telephonic switch.

21. The communication system of claim 11 wherein the telephonic network device is a digital loop carrier.

22. The communication system of claim 11 wherein the telephonic network device is a digital subscriber line access multiplexer.

12. A communication system for allocating overhead voltage between a telephonic network device and a user device comprising:

a line driver, located in the telephonic switch, in signal communication with the user device wherein the line driver is in one of a plurality of communication states; and

a processor in signal communication with the line driver, wherein the processor allocates the overhead voltage in response to the communication state of the line driver;

wherein the plurality of communication states comprises a plurality of loop condition states and a plurality of XDSL states, wherein the plurality of loop condition states comprises

a high impedance state and

a low impedance state.

24. The communication system of claim 12 wherein the plurality of XDSL states comprises

a full power mode state,

a low power mode state,

a sleep with pilot mode state, and

a sleep mode state.

16. A communication system for allocating overhead voltage for transmission of POTS and XDSL signals comprising:

a processor,

means for determining a communication state of a call for the communication system with the processor; and

means for allocating the overhead voltage in response to the communication state of the call with the processor;

wherein the determining means further includes

means for determining a loop condition state for the communication system,

means for determining the state of the POTS signal, and

means for determining the state of the XDSL signal in response to the loop condition.

17. The system of claim 16 wherein the loop condition state comprises

a high impedance state and

a low impedance state.

18. The system of claim 16 wherein the state of the POTS signal comprises

an on book state and

an off hook state.

19. The system of claim 16 wherein the state of the XDSL signal comprises

a full power mode state,

a low power mode state,

a sleep with pilot mode state, and

a sleep mode state.