Primary

This AT&T module, which is always installed in the center slot

processor

of the primary carrier, manages the components of your

module

premises equipment. See also Expansion processor module.

206 Module

The AT&T equipment component that contains jacks for

 

connecting up to two Centrex lines and up to six extensions

 

to the equipment controller.

Installation Guidelines

In this chapter, we refer to line jacks and extension jacks; these terms describe the locations where connections are made to the equipment controller. During installation, each Centrex line is connected to a line jack on the controller. In addition, each phone (or optional device) is connected to an extension jack on the controller (either directly or via a wall jack). Once connections are made, the controller associates each line jack (numbered consecutively from 01 through 24) with a specific extension jack (numbered consecutively from 10 through 33). Each Centrex line is the primary line for the phone at the corresponding extension. (Refer to Form B in the System Planner, which records how your phone numbers are assigned to system extensions.)

Placement of Carriers and Modules

■Carriers. You will be installing either one or two carriers, depending on the number of lines you have (see “Capacity,” on page 1-8).If you are going to install the expansion carrier, plan to install it to the right of the primary carrier. Install the backplane(s) within five feet of the network interface jacks and a grounded 110 VAC electrical outlet not controlled by a switch. If you are installing two carriers, both must be plugged into the same power outlet. In addition, when you mount the backplane(s) on the wall, leave at least six inches of clearance at the top and sides, and two feet at the front and bottom.

■Modules. To install modules, follow the rules below:

■Install the primary processor module in the center slot of the primary carrier.

■If you are installing the expansion carrier, install the expansion processor module in its center slot.

■The first (leftmost) slot in each carrier must contain a 206 module.

■Do not skip slots when installing 206 and 400 modules.

■A 400 module must be installed to the right of each 206 module (except the last 400 module, which can be skipped if you do not need the additional lines).

■If a second 206 module is installed in a carrier, it must be installed to the right of the processor module.

Figure 2-1shows the two carriers, with line and extension jacks numbered, for a configuration containing 24 lines and 24 extensions. For a detailed explanation of line and extension jack numbering, see Chapter 3.

Installing the Equipment 2-3

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AT&T II manual Installation Guidelines, Placement of Carriers and Modules, Primary carrier, manages the components of your
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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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