Patent ID: 8355629
Filing Date: 2013-01-15
Classification: H04B,H04Q

Abstract:
1. A method for notifying an optical line termination (OLT) of a power failure, comprising: receiving a notification of a power failure from a power supply coupled to an optical network termination (ONT), the notification indicating that a battery backup within the power supply falls below a threshold voltage; in response to receiving the notification, terminating each power-consuming device or driver on the ONT except a transfer protocol module within the ONT, the transfer protocol module adapted to solely transmit a dying gasp alarm to the OLT; upon terminating the at least one power-consuming device or driver, receiving power from a dedicated power storage unit dedicated to providing power to the transfer protocol module; and transmitting, via the transfer protocol module, the dying gasp alarm to the OLT utilizing at least a portion of the power from the dedicated power storage unit, the dying gasp alarm notifying the OLT of the power failure, wherein the battery backup powers the each power-consuming device or driver on the ONT, and the dedicated power storage unit powers only transfer protocol module.