Preserving voltage on telephone line over hard reset during planned outage
AssigneeARRIS Enterprises LLC
InventorWilliam J. Mohr
Life of this patent
Estimating the term…
Abstract
Systems and methods can provide for preventing a false alarm generated during a planned network outage during a maintenance window. Security systems can generate and report alarms to a security center through a communications network. Intruders are known to disable the communication network thereby preventing reporting of an alarm to the security center. Security systems can generate local alarms upon detecting loss of the communications network. It is advantageous for a communications network operator to prevent false alarm generation during periods of planned network outages.
Claims20
A computer-implemented method, comprising:
- receiving a countdown value through a network;
- storing the countdown value in a nonvolatile storage;
- determining the condition of a network lock signal from a communication medium and performing the following steps if the network modulation lock signal is lost:
- a. retrieving the countdown value from the nonvolatile storage;
- b. using the countdown value retrieved from the nonvolatile storage and setting a maintenance time;
- c. continuing to apply a loop voltage to one or more telephony lines if the maintenance time has not elapsed;
- and
- d. if the maintenance timer has elapsed, and if no network modulation signal has been locked onto, then discontinue applying the loop voltage.
One or more non-transitory computer-readable media having instructions stored thereon, the one or more computer readable media, when executed by a processor to perform operations comprising:
- detecting a hard reset;
- retrieving a countdown value from a nonvolatile storage;
- applying loop voltage to one or more telephone lines;
- determining the condition of a network lock signal and performing the following steps if the network lock signal is lost:
- a. decrementing the countdown value;
- b. storing the countdown value in the nonvolatile storage;
- c. determining if the countdown value has expired;
- and
- d. if the countdown value has expired, and a network modulation signal is not detected, then discontinue applying the loop voltage to the one or more telephone lines.
A system, comprising:
- a interface operable to provide a network connection;
- a demodulator operable to receive network signals and further operable to generate a network lock signal;
- a modulator operable to transmit network signals;
- one or more processors operable to process the network signals and provide control of a broadband communication device;
- loop voltage management logic operable to provide loop voltage on a telephony line;
- and
- a board power supply operable to provide power to the broadband device from a first or second power source.
Dependencies are inferred from the claim text.