Connecting Lines and Extensions

555-1343

555-1344

555-1345

555-1346

Network

Interface

Jacks

1 Test for dial tone at the network interface jacks before connecting Centrex lines. Connect a standard touch-tone phone to the first network interface jack. Lift the handset and listen for dial tone. Repeat for each network interface jack. (If there is no dial tone, contact your local telephone company before continuing.)

4 Test the lines. Plug an MLS- or MLC-model phone into extension jack

10.Press the line buttons for each Centrex line and listen for the dial tone.

2 A) Connect the telephone line cords to the line jacks on the 206 and 400 modules, starting with the top line jack on the leftmost 206 module. B) Route each cord through the hook on the front of the module, then through the slot between the module and the base of the backplane. Leave at least two feet of slack in cords to allow for easy replacement of modules (see “Replacing a Module” on page2-14).

5 A) Connect the modular telephone cords to the 206 module extension jacks, starting at the top jack on the leftmost module. B) Route each cord through the hook on the front of the mod- ule, then through the slot between the module and the base of the backplane. Leave at least two feet of slack in cords to allow easy replacement of modules (see “Replacing a Module” on page

2-14). Connect each cord to the appro- priate wall jack or directly to a phone.

NOTE: If wall jacks are not installed, call a qualified service technician.

3 Connect the free end of each telephone line cord to the appropriate network interface jack.

2-10Installing the Hardware

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AT&T II manual Connecting Lines and Extensions, 10Installing 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.