Hotline Phones. A Hotline phone should be a standard phone—not an MLS or MLC-model phone—but can ring any type of phone. You can specify one alert extension for each Hotline phone, and you can install multiple Hotline phones, if you wish. A Hotline phone only requires connection to an available extension jack (with no Centrex line assigned to the extension). To simplify programming, we recommend installing Hotline phones and doorphones on the last available extension jacks on the last installed 206 module in the equipment controller (if the last module in the equipment controller is a 206 module with no corresponding 400 module, the last four extension jacks will not have Centrex lines assigned to them by default).

■Auxiliary Equipment. There area variety of ways to set up fax machines, modems, and answering machines to work with the equipment controller. See Chapter 7 for advice on using this equipment. To connect a telephone and a fax on the same extension, see “Combination Extensions” below.

■Doorphones. You can connect up to two proprietary doorphones to the equipment controller. Like Hotline phones, doorphones only require connection to an available extension jack (with no Centrex line assigned to the extension). To simplify programming, we recommend installing doorphones and Hotline phones on the last available extension jacks on the last installed 206 module in the equipment controller (if the last module in the equipment controller is a 206 module with no corresponding 400 module, the last four extension jacks will not have Centrex lines assigned to them by default).

■Call Reporting Devices. You can connect a call accounting device to the SMDR jack on the primary processor module for recording call activity. (See “Call Reporting Devices (SMDR)” on page 7-7 for more information.)

■In-Range Out-of-Building Protectors. Installing phones in a different building from the equipment controller requires AT&T In-RangeOut-of-Building (IROB) protectors, to prevent damage due to lightning (installation instructions are included with the protector).

Combination Extensions

You can connect a standard device (such as a standard phone or a fax machine) on an extension by itself, or you can use an AT&T 267F2 bridging adapter (only) to combine the standard device with another standard device or an MLS- or MLC-model phone at one extension jack. You cannot install two MLS- or MLC-model phones on the same extension, and the combined REN of two devices on an extension must be no more than 2.0. Figure 2-2 shows how to connect the two devices to the bridging adapter at a combination extension,

AT&T

267F2 Adapter

Standard Device Only

System Phone or Standard Device

Wall Jack

Figure 2-2. Connecting Two Devices on One Extension

Installing the Equipment 2-5

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AT&T II manual Combination Extensions, Connecting Two Devices on One Extension
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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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