Adtran Gmbh

Jerry Lynn Greer

Thomas Frederick Detwiler

Darrin L Gieger

Dennis B McMahan

Ayman Ghobrial

Paul Graves McElroy

Bruce Edward Mitchell

Vern Brethour

Jared Lee Oldacre

Bradley Cariaga

Circuitry of an optical line terminal (OLT) can be controlled to be compatible with optical modules of different optical protocols having different electrical connectivity requirements. In some embodiments, the OLT has a controller that is configured to communicate with an optical module plugged or otherwise mated with a socket of the OLT in order to discover a module type of the optical module. Based on the detected module type, the controller is configured to control the electrical characteristics of the OLT circuitry so that it is compatible with the electrical and operational requirements of the optical module. Thus, the OLT is compatible for use with any of a plurality of optical module types.

Systems and methods for interfacing optical line terminals with optical modules

A system and method transmits data and receives data packets within a bonding engine. The data packets are fragmented into a plurality of packet fragments for communication across a bonded group of subscriber lines. A Frame Check Sequence (FCS) in the data packet is inverted on one direction of the bonding group to prevent any data packets from propagating towards the network during a loopback condition.

Bonding engine configured to prevent data packet feedback during a loopback condition

A telecommunications access module comprises at least one bonding engine that receives packet data and bonds subscriber line pairs together to form a bonding group over which packet fragments are transmitted. A database maintains a list of communications subscriber line pairs that form the bonding group. A processor is configured to determine whether an incoming packet subject to fragmentation is long enough to fragment across multiple subscriber line pairs. If the incoming packet can be fragmented, the processor is configured to calculate a cost function for minimum packet fragment sizes that is proportional to the end-of-fragment arrival time at the far end of each subscriber line pair and calculate remainders of packet fragment length. The packet is fragmented based on the calculated cost function and remainders of any packet fragment lengths and allocated to the subscriber line pairs and transmitted.

Communications system with bonding engine that dynamically adapts fragment size

A cascaded signal processing arrangement processes digitally encoded voice samples transported over a time division multiplex (TDM) communication path for application to a processor-controlled digital communication device, in particular an integrated access device. Processed voice samples are packetized in accordance with an encapsulating protocol and transmitted as a packetized voice output stream to a destination receiver device. The arrangement includes an echo canceller coupled to the TDM communication path and performing echo cancellation processing on the digitally encoded voice samples. The echo cancellation-processed voice sample signals are compressed by a data compression operator and applied to a packet encapsulating host processor via the TDM communication path. This obviates the necessity of the host processor having to use data bus cycles to download processed digitized voice samples.

Echo canceller and compression operators cascaded in time division multiplex voice communication path of integrated access device for decreasing latency and processor overhead

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Huntsville, AL, United States of America

Jerry Lynn Greer