Installing the Carriers and Modules

Backplane

Primary

 

206 Module

Processor

 

Module

 

 

 

 

 

1 A) Hold the backplane against the wall. (If you are also installing the expansion carrier, plan to install it to the right of the primary carrier, leaving 6” to 24” between carriers.) Using the four screw keyholes in the backplane as a template, mark screw locations on the wall. Start four #12 screws, leaving the screw heads approxi- mately 1/4” away from the wall. Slip the backplane onto the screws and tighten them. B) If you are mounting the expansion carrier, repeat this step.

2 A) Slide the primary processor mod- ule into the center slot of the primary carrier backplane. Push slowly but firmly until the module locks into place with two snaps, so that it is attached to the rear of the backplane and held by the locking tab on the bottom of the slot. Do not force the module. If it does not insert easily, remove the mod- ule, clear any obstruction, and rein- sert. B) If you have an expansion carrier, slide the expansion processor module into its center slot until the module locks into place.

3 Slide the first 206 module into the leftmost slot of the primary carrier backplane. (The system will not work if a 206 module is not installed in this slot.) Going from left to right, install a 206 module first, then a 400 module. Each 400 module must be to the right of a 206 module.

WARNING:

There are no customer-serviceable components inside the modules or backplane. Hazardous voltages within. DO NOT OPEN THE MODULES!

Primary

Processor

Module

Expansion

Processor

Module

Main Circuit Breaker

Power

Jack

Lights

4 If you have installed both carriers, plug the ends of the expansion cable into the two processor modules and tighten the screws. Route both ends of the cable through the hooks on the fronts of the modules.

NOTE: The colored plastic filters on the expansion cable should rest just below the hooks.

5 A) Make sure the main circuit breakers on both carriers are off (pulled out). B) Press the AC power cord firmly into the power jack on the top right rear of the backplane until it locks into place. Plug the other end of the power cord into a grounded three-prong wall outlet not controlled by a switch. Repeat for the expansion carrier, plugging its cord into the same wall outlet. C) Push in the main circuit breaker for the expansion carrier first, and then push in the main circuit breaker on the primary carrier.

6 Check all green lights on the fronts of the modules to make sure they are lit. If a single light is out, pull out the main circuit breakers, reseat the module, then push in the main circuit breakers (as you did in Step 5C). If multiple lights are out, check to see that the modules are installed in the right order. If they are, pull out the main circuit breakers, reseat the leftmost module of the ones that were out, then push in the main circuit breakers. If the lights are still out, call the Helpline.

Installing the Hardware 2-9

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AT&T II manual Installing the Carriers and Modules, Installing the Hardware

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.