To use Table C-1, first locate the item you want. A triangle ( ) indicates where you can obtain it.

 

 

 

 

 

 

SOURCE (U.S.)

 

 

 

 

 

 

 

AT&T

AT&T

AT&T

 

AT&T

AT&T

 

 

 

 

Catalog Sales

Sales

PhoneCenter

 

Authorized

National Parts

 

 

 

 

(Sourcebook)

Office

Store

 

Dealer

Sales Center

 

 

 

 

(800) 451-2100

(800) 247-7000

*

 

* *

(800) 222-PART

 

 

 

 

 

 

 

 

 

 

 

 

 

Equipment Modules and Wiring:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Primary Processor module

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Expansion Processor module

 

 

 

 

 

 

 

 

Line/Extension module (206)

 

 

 

 

Includes 206 module, two 7-ft. line cords, two 267F2

 

 

 

 

bridging adapters, and installation instructions

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Line module (400)

 

 

 

 

 

 

 

 

 

 

Includes 400 module, four 7-ft. line cords, and instructions

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Backplane

 

 

 

 

 

 

 

 

System cover

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AC power cord

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Line cord (D2R)

 

 

 

 

 

 

 

 

 

 

Connects 206/400 modules to network interface (clear color)

 

 

 

 

 

 

Specify length: 7 (standard length), 14, or 25 ft.

 

 

 

 

 

 

 

 

 

 

267F2 bridging adapter

 

 

 

 

 

Connects two devices to one extension

 

 

 

 

 

In-Range Out-of-Building (IROB) protector (503A1 or 504A1)

 

 

 

 

 

 

 

 

 

 

Required when Installing extensions in another building from

 

 

 

 

 

the equipment controller (two required per MLS-model

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

telephone, one per standard phone or device)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Z300A Electromagnetic Interference (EMI) Filter

 

 

 

 

 

 

Includes filter, 7-ft. line cord, and installation instructions

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

360 VA Uninterruptible Power Supply

 

 

 

 

 

 

 

267C line adapter

 

 

 

 

 

 

 

 

 

 

Splits two outside lines from an RJ14 network interface

 

 

 

 

 

 

 

jack, so that each line has its own modular plug (do not

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

use at extension jacks)

 

 

 

 

 

 

 

 

 

 

355A/355AF adapter

 

 

 

 

 

 

 

 

Provides modular connection for call reporting device

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Telephone cord (D8W)

 

 

 

 

 

 

 

 

 

 

Connects primary processor module to 355A/355AF adapter

 

 

 

 

 

for call reporting device. Specify length: 7, 14, or 25 ft.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MLS- and MLC-Model Telephones and Accessories:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MLS-34D corded telephone, black or white

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MLS-12D corded telephone, black or white

 

 

 

 

 

 

MLS-12 corded telephone, black or white

 

 

 

 

 

 

MLS-6 corded telephone, black or white

 

 

 

 

 

 

MLC-6 cordless telephone, black or white

 

 

 

 

 

 

Telephone stand, black or white

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Button label package (specify telephone model)

 

 

 

 

 

 

Handset (K2S1), black or white

 

 

 

 

 

 

Standard for MLS-model phones

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Amplified handset (K6S), black or white

 

 

 

 

 

Optional for hard-of-hearing users with MLS-model phones

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Handset cord, 9 ft., black or white, coiled

 

 

 

 

 

Connects handset to telephone

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Telephone mounting cord (D4BU)

 

 

 

 

 

 

 

 

Connects phone to wall jack, jack panel, or 206 module

 

 

 

 

 

ext. jack. Specify length 2, 7, or 14 ft.

 

 

 

 

 

 

 

 

 

 

Modular telephone extension cord—8-connector

 

 

 

 

 

 

 

 

Extends D4BU cords Specify length: 14, 25, 50, 75, or 100 ft.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*To locate the AT&T PhoneCenter Store nearest you, see the listing in your local telephone directory’s white pages (under AT&T), or call 1 800 222-3111 (in the U.S. only).

**To locate the nearest AT&T Authorized Dealer, call 1 800 247-1212 (in the U.S. only).

Table C-1. Sources of Additional Equipment and Replacement Parts (U.S.)

C-12Maintenance and Customer Support

Page 143
Image 143
AT&T II manual 12Maintenance and Customer Support, Source U.S

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.