POTS battery removal for IP/ATM-based network equipment

• US 7,715,530 B2
• Filed: 04/25/2005
• Issued: 05/11/2010
• Est. Priority Date: 04/25/2005
• Status: Expired due to Fees

• Current Assignee: AT&T Knowledge Ventures, L.P. (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Dement, Mark Lamar, Walker, Bryan David, Edmon, Eugene L.
• Primary Examiner(s): Kuntz; Curtis
• Assistant Examiner(s): El-Zoobi; Maria
• Application Number:
  US11/114,363
• Publication Number:
  US 20060239417A1
• Time in Patent Office: 1,842 Days
• Field of Search: 370/352, 370/353, 370/390, 370/392, 370/463, 370/480, 370/338, 340/635, 379/413, 379/15.01, 379/37, 379/33, 709228-249, 398 66- 77, 398/171
• US Class Current: 379/37
• CPC Class Codes: H04L 12/10 Current supply arrangements
• CPC Class Codes: H04M 11/04 with alarm systems, e.g. fire, police or burglar alarm systems

Abstract

The present invention discusses a method and apparatus for selectively providing a power to an alarm system, such as the power source provided by a telephone company, to alarm equipment located at customer'"'"'s premises in a Fiber to the Premises (FTTP) telephone network. This power source is commonly used to power the POTS lines in a Service Provider'"'"'s network. Two signals, one relating to the optical connectivity of the network and one relating to the connectivity of virtual circuits, are monitored at the customer premises. A logical operation is performed so as to remove a power source if either of the two signals is lost.

Claims

1. An apparatus for selectively providing power to an alarm system, comprising:

a first circuit configured to;

receive a first signal indicative of a state of an optical connection to an optical network termination;

receive a second signal indicative of a state of a virtual circuits of a Fiber to the Premises (FTTP) communication link; and

produce an output based on the first and second signals;

a power removal circuit configured to;

receive the output of the first circuit at an enabling input;

receive a power signal;

pass the received power signal to a power removal circuit output when the output of the first circuit does not enable the power removal circuit.

2. The apparatus of claim 1, wherein the first signal is indicative of a state of an electrical signal produced by a wave division multiplexer.

3. The apparatus of claim 2, wherein the second signal is indicative of a state of asynchronous transfer mode (ATM) cells extracted from the electrical signal.

4. The apparatus of claim 3, wherein the electrical signal carries passive optical network protocol compliant information.

5. The apparatus of claim 1 wherein the first circuit is a logical or circuit wherein an output of the first circuit enables the power removal circuit if either the first signal or the second signal indicates a loss of connectivity.

6. The apparatus of claim 1, wherein the power removal circuit is configured to control power to a subscriber line interface card.

7. A method for selectively providing power to an alarm system, comprising:

receiving a first signal indicative of a state of an optical connection to an optical network termination;

receiving a second signal indicative of a state of a virtual circuits of a Fiber to the Premises (FTTP) communication link;

producing a control output based on the first and second signals;

receiving the control output at an enabling input;

receiving a power signal;

passing the received power signal to a power output when the control output is not asserted.