A physical or logical network that provides data communications to a larger number of independent users than are usually served by a local area network (LAN) and is usually spread over a larger geographic area than that of a LAN.
Note 1: WANs may include physical networks, such as Integrated Services Digital Networks (ISDNs), X.25 networks, and T1 networks.
Note… (Read More →)

A toll service offering for customer dial type telecommunications between a given customer station and stations within specified geographic rate areas employing a single access line between the customer location and the serving central office. Each access line may be arranged for either outward (OUT-WATS) or inward (IN-WATS) service or both. [47 CFR Pt.36-A]
Note: The offering is for fixed-rate… (Read More →)

A set of two or more adjacent tracks written on a diskette with the same data, as part of a method of copy protection. [2382-pt.8]

1. The property of any communications facility, equipment, channel, or system in which the range of frequencies used for transmission is greater than
0. 1 % of the midband frequency.
Note: "Wideband" has many meanings depending upon application. "Wideband" is often used to distinguish it from "narrowband,"where both terms are subjectively defined relative to the implied context.
2. In communications… (Read More →)

A communication channel of a bandwidth equivalent to twelve or more voice grade channels. [47 CFR Pt.36-A]

1. A modem whose modulated output signal can have an essential frequency spectrum that is broader than that which can be wholly contained within, and faithfully transmitted through, a voice channel with a nominal 4-kHz bandwidth.
2. A modem whose bandwidth capability is greater than that of a narrowband modem.

Synonym reasonableness check.

A variable used in searches and comparisons (usually signified by an asterisk "*") to denote that any value may be returned.
Note: For example, a search of a database for the character string "fire*" could return "firewall," "fire station," "firebug," etc.

1. A character that may be substituted for any of a defined subset of all possible characters.
Note 1: In high-frequency (HF) radio automatic link establishment, the wildcard character "?" may be substituted for any one of the 36 characters, "A" through "Z" and "0" through "
9. "
Note 2: Whether the wildcard character represents a single character or… (Read More →)

Worldwide Interoperability for Microwave Access