Glossary

A device used to test a fiber-optic link, including the optical fiber and connectors, by launching an optical signal (light pulse) through the link and measuring the amount of energy that is reflected back. The OTDR is a troubleshooting device that can pinpoint faults throughout a fiber-optic link.

A metallic or nonmetallic box mounted within a wall, floor, or ceiling used to hold outlet, connector, or transition devices.

A metallic or nonmetallic box mounted within a wall, floor, or ceiling used to hold outlet, connector, or transition devices.

The useful signal or power delivered by a circuit or device.

A telecommunications infrastructure designed for installation outside of any structure.

The level of over-voltage that will trip the circuit breaker in a surge protector.

A method of synchronous bit synchronization. The receiver samples the signal at a much faster rate than the data rate. This permits the use of an encoding method that does not add clocking transitions.