Abbreviation for American National Standard.

Abbreviation for American National Standards Institute.

A U. S. industry standard that specifies a generic telecommunications cabling system, which will support a multiproduct, multivendor environment, for commercial buildings.
Note 1: The standard specifies performance characteristics for unshielded twisted pair telecommunications cabling, including categories allowing data communications up to 100 Mb/s. These categories are designated 3, 4, and
5. Categories 1 and 2 have not been defined.… (Read More →)

A signal sent by receiving equipment to the sending station to indicate that the receiver is ready to accept transmission.

A signal indicating acceptance of the call by the addressed user. [T1.507-1996]

1. A supervisory signal returned from the called telephone to the originating switch when the call receiver answers.
Note 1: The answer signal stops the ringback signal from being returned to the caller.
Note 2: The answer signal is returned by means of a closed loop.
2. An off-hook signal transmitted towards the network when the called party answers.
3.… (Read More →)

The term "Answer/Disconnect Supervision" denotes the transmission of the switch trunk equipment supervisory signal (off-hook or on-hook) to the customer's point of termination, typically as an indication that the called or calling party has answered or disconnected.

1. Any structure or device used to collect or radiate electromagnetic waves.
2. A device that converts radio frequency electrical energy to radiated electromagnetic energy and vice versa; in a transmitting station, the device from which radio waves are emitted. [47CFR]

See aperture.

An assembly of antenna elements with dimensions, spacing, and illumination sequence such that the fields for the individual elements combine to produce a maximum intensity in a particular direction and minimum field intensities in other directions.