F

Fax Management button

An MLS- or MLC-model phone button with a light that is programmed with the extension jack number of a fax machine. A user can monitor the light next to this button to determine when the fax machine is in use, available, or not answering.

Feature phone

An industry-standard phone that includes programmable buttons or other built-in features.

400module

The AT&T equipment component that contains jacks for connecting up to four Centrex lines to the equipment controller.

L

Line jack

The location on 206 and 400 modules that allows you to connect Centrex lines to the equipment controller.

Line jack number

The number assigned to each line jack on a 206 or 400 module. Line jack numbers run consecutively from 01 through 24 (for a two-carrier configuration).

Loudspeaker paging system

Equipment that lets you make announcements from a central location. Any AT&T paging system can be connected to the PAGE jack on the primary processor module in the equipment controller.

H

Hotline phone

A standard phone that rings another extension automatically when the handset is lifted.

I

Industry-standard device

A telephone or other telecommunications device that can be connected directly to the public telephone network. See also Standard phone and Proprietary device.

Inside call

A call made from an extension inside the Centrex system to another extension inside the Centrex system, using the Centrex extension number.

Intercom call

A call that is made using the [ Intercom ] button on an MLS- or MLC-model telephone, to call another system extension without tying up primary Centrex lines.

Intercom Calling button

A programmable button on which an extension jack number is stored, to enable one-touch dialing of a system extension without tying up primary lines. See also Call Viewing and System.

M

MLS- and MLC-Model telephones

The AT&T telephones that you purchased as part of your system. These telephones are specifically designed for use with the equipment controller. Models include the MLS-34D, MLS-12D, MLS-12, MLS-6, and MLC-6 phones.

Music-on-hold system

Equipment that lets you play recorded music to callers who are placed on hold. A music-on-hold audio source can be connected to an RCA jack on the primary processor module in the equipment controller.

N

Network interface jack

A jack, generally located in your equipment room, that provides access to a Centrex line coming into your building from your local telephone company.

A telephone cord from the network interface jack to a line jack on a 206 or 400 module connects the Centrex line to your system.

Night Service

A feature that lets you redirect calls received after hours or when a receptionist is not available to answer calls.

Glossary GL-3

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AT&T II manual Glossary GL-3, Fax Management button

II specifications

AT&T II, a pivotal case in the landscape of telecommunications regulation, emerged from the expansive antitrust actions against the American Telephone and Telegraph Company (AT&T). Following World War II, AT&T had established itself as a telecommunications behemoth, monopolizing the market. The ramifications of this dominance spurred a significant shift in regulatory measures, leading to the dissolution of the Bell System in 1984, which consisted of AT&T and its regional operating companies.

One key feature of AT&T II is its emphasis on promoting competition in the telecommunications sector. The court's decision aimed to dismantle the monopolistic practices that had stifled innovation and restricted consumer choice. By encouraging competition among various service providers, the ruling paved the way for an environment where new technologies could flourish.

The technologies that emerged post-AT&T II significantly transformed the telecommunications landscape. The introduction of new digital switching systems allowed for improved call quality and increased network efficiency. The evolution of fiber-optic technology also played a crucial role, enabling faster transmission speeds and greater data capacity. Moreover, innovative services, such as mobile telephony and broadband internet, proliferated as competition increased.

Another characteristic of AT&T II is its focus on accessibility and consumer protection. The ruling mandated that telecommunications services be available to a broader swath of the population, ensuring that underserved communities had access to essential communication services. This shift not only democratized access but also laid the groundwork for the modern internet revolution, fostering the growth of the digital economy.

The impact of AT&T II can also be seen in the regulatory frameworks that followed. The Federal Communications Commission (FCC) adopted policies aimed at enhancing market transparency and ensuring fair practices among competitors. These regulatory changes helped to create a more equitable playing field, allowing smaller companies to compete against established giants.

In summary, AT&T II marked a turning point in telecommunications history, characterized by a focus on competition, technological advancements, and consumer protection. The dissolution of AT&T's monopoly allowed for the rapid evolution of technology and services, ultimately benefiting consumers and fostering an environment ripe for innovation. This ruling not only redefined the telecommunications industry but also set a precedent for how markets are regulated in the United States.