Equipment Controller

The AT&T product that you purchased as part of your system. This product consists of a group of modules that connect Centrex lines coming into your building to the extensions in your system. The equipment controller also provides equipment features.

Expansion The optional component of the AT&T equipment controller

carrierthat can be connected to the primary carrier to expand your system’s line and extension capacity. See also Primary carrier.

Expansion The main module of the expansion carrier, which must be

processor installed in the center slot of the expansion carrier. This

moduleAT&T module extends the primary carrier’s management capabilities to the 206 and 400 modules installed in the expansion carrier. See also Primary processor module.

Extension jack The location on 206 modules that allows you to connect phones (or other telecommunications devices) to the equipment controller.

Extension jack number

400 Module

The number assigned to each extension jack on a 206 module. Extension jack numbers run consecutively from 10 through 33 (for a two-carrier configuration).

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

Line jack

The location on 206 and 400 modules that allows you to

 

connect Centrex lines to the equipment controller.

Line jack

The number assigned to each line jack on a 206 or 400

number

module. Line jack numbers run consecutively from 01

 

through 24 (for a two-carrier configuration).

Network

A jack, generally located in your equipment room, that

interface jack

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.

Premises equipment

Primary carrier

The AT&T equipment controller and MLS- and MLC-model telephones that you purchased as part of your system, plus all other telecommunications devices that are connected to your equipment controller. For purposes of this guide, premises equipment does not include any equipment that connects directly to Centrex lines without going through the equipment controller.

The required component of the AT&T equipment controller that contains the primary processor module and up to two 206 and two 400 modules. This provides for connection of up to 12 lines and 12 extensions. See also Expansion carrier.

2-2Installing the Equipment

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AT&T II manual Connect Centrex lines to the equipment controller, Number assigned to each line jack on a 206 or
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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.
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