The present disclosure envisages a building management system for a building. The building management system includes a building controller, a power over Ethernet (PoE) adapter, and a PoE source. The building controller is configured to operate one or more building equipment of the building, wherein the building controller is powered via alternating current (AC) power. The power over Ethernet (PoE) adapter comprises one or more circuits configured to receive PoE from the PoE source, wherein the PoE source is configured to generate the PoE having direct current (DC) power. Further, the PoE adapter is configured to generate AC power based on the PoE received from the PoE source, and provide the AC power to the building controller.

The present disclosure envisages a building management system for a building. The building management system includes a building controller, a power over Ethernet (PoE) adapter, and a PoE source. The building controller is configured to operate one or more building equipment of the building, wherein the building controller is powered via alternating current (AC) power. The power over Ethernet (PoE) adapter comprises one or more circuits configured to receive PoE from the PoE source, wherein the PoE source is configured to generate the PoE having direct current (DC) power. Further, the PoE adapter is configured to generate AC power based on the PoE received from the PoE source, and provide the AC power to the building controller.

Embodiments include a power distribution access network comprising power sourcing equipment (PSE) having a hybrid power-data port and at least one remote distribution node coupled to the PSE. The PSE delivers power at a first voltage to the distribution node and the distribution node delivers power at a second voltage to a remote device. Delivery of power to the distribution nodes may be based on information from the distribution node. Other embodiments include a power distribution access network with remote distribution nodes daisy-chained together by hybrid power-data cables so that a power line and a plurality of optical lines pass along the distribution nodes. The optical lines sequentially drop off along the chain and a remainder of the optical lines is indexed at each distribution node. Remote powered devices are coupled to the distribution nodes. Each remote powered device receives power and optical signals from the respective remote distribution node.

Embodiments include a power distribution access network comprising power sourcing equipment (PSE) having a hybrid power-data port and at least one remote distribution node coupled to the PSE. The PSE delivers power at a first voltage to the distribution node and the distribution node delivers power at a second voltage to a remote device. Delivery of power to the distribution nodes may be based on information from the distribution node. Other embodiments include a power distribution access network with remote distribution nodes daisy-chained together by hybrid power-data cables so that a power line and a plurality of optical lines pass along the distribution nodes. The optical lines sequentially drop off along the chain and a remainder of the optical lines is indexed at each distribution node. Remote powered devices are coupled to the distribution nodes. Each remote powered device receives power and optical signals from the respective remote distribution node.

An example electronic apparatus includes a communication circuitry; a power supply; a first processor configured to have a first mode which receives first power from the power supply and connects with a server through the communication circuitry to transmit and receive information, and a second mode which receives no power or second power lower than the first power from the power supply; and a second processor configured to repetitively output a mode switching signal within a preset range of time interval based on the second mode of the first processor, wherein the first processor is switched over to the first mode based on the mode switching signal, is configured to transmit connectivity keeping information to the server through the communication circuitry and is switched over to the second mode.

An example electronic apparatus includes a communication circuitry; a power supply; a first processor configured to have a first mode which receives first power from the power supply and connects with a server through the communication circuitry to transmit and receive information, and a second mode which receives no power or second power lower than the first power from the power supply; and a second processor configured to repetitively output a mode switching signal within a preset range of time interval based on the second mode of the first processor, wherein the first processor is switched over to the first mode based on the mode switching signal, is configured to transmit connectivity keeping information to the server through the communication circuitry and is switched over to the second mode.

A network system includes a higher-level device, a first intermediate device connected to the higher-level device, and a second intermediate device connected to the higher-level device. The first intermediate device is configured to control supply of an electric power to a first lower-level device via a first device being able to be controlled to interrupt. The second intermediate device is configured to control supply of an electric power to a second lower-level device via a second device being able to be controlled to interrupt, the second lower-level device being a redundant component for the first lower-level device.

A network system includes a higher-level device, a first intermediate device connected to the higher-level device, and a second intermediate device connected to the higher-level device. The first intermediate device is configured to control supply of an electric power to a first lower-level device via a first device being able to be controlled to interrupt. The second intermediate device is configured to control supply of an electric power to a second lower-level device via a second device being able to be controlled to interrupt, the second lower-level device being a redundant component for the first lower-level device.

A system of embedding access control logic into a network gear according to an embodiment includes a plurality of access control devices including corresponding lock mechanisms configured to control access through corresponding passageways, a headend access control system configured to manage access control data associated with the plurality of access control devices, and a network switch communicatively coupled to the headend access control system and comprising a smart communication manager, wherein the smart communication manager includes an application programming interface accessible by the headend access control system and translates commands received from the headend access control system into payloads readable by the plurality of access control devices.

A system of embedding access control logic into a network gear according to an embodiment includes a plurality of access control devices including corresponding lock mechanisms configured to control access through corresponding passageways, a headend access control system configured to manage access control data associated with the plurality of access control devices, and a network switch communicatively coupled to the headend access control system and comprising a smart communication manager, wherein the smart communication manager includes an application programming interface accessible by the headend access control system and translates commands received from the headend access control system into payloads readable by the plurality of access control devices.