EQUIPMENT CONTROLLER

Line

Jacks

Primary Carrier

Backplanes

 

Expansion Carrier

 

206 Modules

 

400 Modules

 

Primary Processor Module

 

(center slot)

 

PAGE Jack

 

SMDR Jack

 

MUSIC ON HOLD Jack

 

Line

 

Jacks

Ext. Jacks

Expansion Processor Module (center slot)

Ext. Jacks

AT&T Magic on Hold®

EXTENSIONS

Network Interface Jacks

Expansion Cable

AT&T 572 Serial Printer AT&T PagePac6® Plus

Extension Jack 10

267F2

Bridging Adapter

MLS-34D

Standard Phone

 

for Power

 

 

Display

 

 

 

 

Faillure Operation

 

Phone

 

 

 

 

 

 

Extension

 

Extension

 

 

Jack 11

 

Jack 14

 

MLS-12

 

 

MLS-34D

 

Phone

 

 

Display

 

 

 

 

 

 

 

Phone

 

 

Extension

 

Extension

 

 

 

Jack 15

267F2 Bridging

Jack 12

 

 

 

 

 

 

Adapter

 

267F2

 

 

 

 

Bridging

 

 

 

 

Adapter

Fax Machine

 

 

 

 

 

 

 

 

 

Personal

 

 

 

 

Answering

 

 

Standard

 

Machine

MLS-6

 

 

 

 

Phone

 

 

Phone

 

 

 

267F2

 

 

 

 

Bridging

 

 

 

 

Adapter

 

 

Extension

 

Extension

 

 

 

Jack 16

 

 

Jack 13

Bell

 

 

 

 

 

 

 

 

Standard

MLS-12D

 

 

 

 

 

 

Phone

Phone

Extension Jack 17

MLC-6

Cordless Phone

Extension Jack 26

Hotline

Phone

Extension

Jack 27

Doorphone

Installing the Equipment 2-7

Page 32
Image 32
AT&T II manual Equipment Controller

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.