hpnicfEponDeviceObjectPowerDown 1.3.6.1.4.1.11.2.14.11.15.2.42.4.1.1.1.1.1.7

Setting this variable to True(1) will cause Device to be entered into Power down mode where no registration is allowed and only receiving data from the link. Writing can be done all the time. This attribute is relevant for an OLT and an ONU.