A signal that is generated by a receiver in order to condition a remote transmitter to commence transmission. [From Weik '89]

See click-through.

1. Radiation, at the same or different wavelengths, i.e., frequencies, of energy received from an incident wave.
2. Undesirable radiation of signals locally generated in a radio receiver.
Note: Radiation might cause interference or reveal the location of the device.

Recommencement of route selection from the first point of routing control, when congestion is encountered at some intermediate switching point in the connection that is to be established.

A company that redistributes the services of a commercial carrier and retails the services to the public.

In FCC deliberations and rulings, the right of a buyer of basic telecommunication services, such as private lines, foreign exchanges, or WATS, to resell and/or share with others the unused capacity.

1. In television technology, the process of converting image information from one format (standard) to another.
Note: The conversion may, for example, affect (involve) the frame rate, the number of lines per frame, the analog resolution per scanning line, or (in digital systems) the number of pixels per scanning line.
2. In video post-production, the process of changing the image… (Read More →)

Any access customer who resells the access service obtained from an exchange carrier. [T1.251-1996]

Installed capacity of a system which is not normally utilized but can be made available when required.

Key held to satisfy unplanned needs. [INFOSEC-99]