Adtran Gmbh

Nagaraj Padur

Jared Daniel Cress

Charles E Polk, Jr

Marc Kimpe

Chad Anthony Dieselberg

Adam Holden

Jared D Cress

A system for performing failover switches in an optical network, such as a time and wavelength division passive optical networks (TWDM PON) like NG-PON2, includes a backup optical line terminal (OLT) for backing up communications of a primary OLT. The backup OLT is configured to allocate small upstream time slots, referred to herein as 'de minimis' time slots, to at least one optical network terminal (ONT) communicating with the primary OLT during normal operation. When a failure occurs that prevents communication between the ONT and the primary OLT, the ONT autonomously tunes to the upstream and downstream wavelength pairs of the backup OLT and begins to transmit data to the backup OLT in the de minimis time slot allocated to it. The presence of data in the de minimis time slot indicates the occurrence of a failover switch to the backup OLT, and the backup OLT then begins to allocate time slots to this ONT, which is normally serviced by the primary OLT according to its normal TDM algorithm.

Systems and methods for performing optical line terminal (OLT) failover switches in optical networks

Systems and methods are provided for an optical network unit (ONU) to automatically set its output power level for messages to be transmitted on a passive optical network. The ONU can autonomously determine the appropriate power level based on information provided to the ONU by an optical line terminal (OLT) and characterization by the ONU of optical signals it receives from the fiber. Specifically, the OLT can provide the ONU with control data indicative of the power level used by the OLT to transmit the message and the desired power level of the OLT for messages from the ONU. The ONU can measure the power level of at least one message received from the OLT and determine the path loss based on the measured power and the control data. The ONU can then automatically determine a suitable power level for its response message such that unacceptable levels of crosstalk between channels are avoided without having to perform an iterative power-leveling process that otherwise may introduce significant delays.

Systems and methods for power leveling in passive optical networks

Methods, systems, and apparatus for selective MAC address learning are disclosed. In one aspect, multiple different packets are received by a telecommunications device. The multiple different packets include different source MAC addresses. For each of the multiple different packets, a distribution type is determined. The distribution type is one of a one-to-one distribution type or a one-to-many distribution type. Based on the determined distribution type of the particular packet, a forwarding table of the telecommunications device is selectively updated. When the particular packet has the one-to-many distribution type, a source MAC address that is included in the particular packet is not stored in the forwarding table. When the particular packet has the one-to-one distribution type, the source MAC address that is included in the particular packet is stored in the forwarding table.

Selective MAC address learning

Systems and methods for wireless management access to a telecommunication device are provided. A portable device, such as a tablet, smartphone, etc., can be used to access a network device, such as a telecommunication device, by accessing a wireless access module of the telecommunication device using any desired wireless technology. When the portable device is in proximity to the telecommunication device the presence of the portable device may be detected, causing an attempted wireless communication between the portable device and the wireless access module. The portable device may provide various security information to the wireless access module that may be verified before access to the telecommunication device is granted. If the portable device is verified it may be authorized for wireless communications with the telecommunication device, including receiving an identifier for the telecommunication device.

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Madison, AL, United States of America

Nagaraj Padur