Abbreviation for optical density.

See parity, parity check.

Synonym parity check.

United States Department of Homeland Security Office of Emergency Communications (OEC) - formerly NCS (see National Communications System). OEC is now called Cybersecurity and Infrastructure Security Agency (CISA); Emergency Communications Division (ECD).

Organization for Economic Co-operation and Development

Original Equpiment Manufacturer

Abbreviation for optical fiber, conductive.
Note: OFC is the designation given by the National Fire Protection Association (NFPA) to interior fiber-optic cables which contain at least one electrically conductive, non-current-carrying component, such as a metallic strength member or vapor barrier, and which are not certified for use in plenum or riser applications. [After FAA]

Abbreviation for optical fiber, conductive, plenum.
Note: OFCP is the designation given by the National Fire Protection Association (NFPA) to interior fiber-optic cables which contain at least one electrically conductive, non-current-carrying component such as a metallic strength member or vapor barrier, and which are certified for use in plenum applications. [After FAA]

Abbreviation for optical fiber, conductive, riser.
Note: OFCR is the designation given by the National Fire Protection Association (NFPA) to interior fiber-optic cables which contain at least one electrically conductive, non-current-carrying component such as a metallic strength member or vapor barrier, and which are certified for use in riser applications. [After FAA]

1. In computer technology, the state or condition of a device or equipment that is not under the direct control of another device.
2. In computer technology, the status of a device that is disconnected from service.