SUBSCRIBER LINE TERMINAL, CONTROL METHOD, AND CONTROL FOR PON SYSTEM

摘要

Provided is a technique that can, even in a case in which one of two processors of an OLT has temporarily paused processing, smoothly perform processing between the two processors after the processor that had temporarily paused processing has restarted. An upper-level processor (11) may temporarily pause when firmware is updated. A basic communication unit (12) (a lower-level processor (13)) is configured so that the operation of the upper-level processor can be maintained in the case that the upper-level processor (11) has temporarily paused. A matching unit (14) matches a management state stored in a first memory unit (21) and a management state stored in a second memory unit (22) after the pause period of the upper-level processor (11) in the case that an event occurs during the pause period of the upper-level processor (11).