PROTECTION FOR FIBRE-OPTIC ACCESS NETWORKS Russian patent published in 2016 - IPC H04Q11/00 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to communication engineering and can be used in optical communication systems. A device (ONU) and a terminal (OLT) are comprised in a passive fibre-optic access network. The passive fibre-optic access network comprises two fibre-optic paths through the network, the main fibre-optic path and a back-up fibre-optic path, connecting the ONU with the OLT. When a fault is detected in the main fibre-optic path, transmission rate negotiation is performed between the ONU and the OLT over the back-up path. When a transmission rate is agreed between the ONU and the OLT during the said transmission rate negotiation with regard to communication over the back-up path, the communication between the ONU and the OLT is executed using the agreed transmission rate over the back-up path.

EFFECT: enabling a fibre-optic network (ONU) to communicate with a terminal (OLT).

56 cl, 11 dwg