Here are some points to remember in using your feature phone with the equipment controller:

■You will not be able to use System Speed Dial Numbers, although you may be able to program outside phone numbers onto your phone’s feature buttons.

■The feature phone’s last number redial button may not work.

■The capabilities of a feature phone are in the phone itself. For example, if you store a number on a feature phone’s auto dial button, that number is stored in the feature phone. (This is different from storing a number on a MLS- or MLC-model phone’s Auto Dial button. When you program a button on an MLS- or MLC-model phone, the number is actually stored in the equipment controller.)

■The feature phone’s hold button does work, but the call is held at the phone itself. Other phones connected to the equipment controller will not be signalled that your line is on hold (it appears as a busy line).

Combination Extensions

A combination extension is an extension with two devices connected—either two standard devices, or an MLS- or MLC-model phone and a standard device (but not two MLS- or MLC-model phones). For instructions on how to install a combination extension, see Figure 2-2on page 2-5.

The following are examples of useful combination extensions:

■MLS- or MLC-model phone plus standard telephone, for power failure backup on extension jacks 10, 16, 22, and 28

■MLS- or MLC-model phone plus answering machine

■MLS- or MLC-model phone plus fax machine

■MLS- or MLC-model phone plus tip-ring headset

■MLS- or MLC-model phone plus an external alert (such as a bell or chime).

Using the telephones in a combination extension is fairly simple. The main thing to understand is that the two telephones share a single extension in the same way several home telephones share a single number. An MLS- or MLC-model telephone works like it always does and a standard telephone works like it always does when connected to the equipment controller. Only one phone or device can be used at a time, unless you want to join the two on a single call (the same way two people can pick up the same call on different telephones at home). For example:

■Both phones share the same primary line.

■Both phones share the same Centrex extension number.

■Both phones share the same voicepath; that is, when either one is busy, the extension is busy.

■The lights on the MLS- or MLC-model phone show what the standard telephone is doing as well as what the MLS- or MLC-model phone is doing. For an explanation of light patterns, see “Lights” on page 6-3.

Using Telephones 6-9

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AT&T II manual Combination Extensions
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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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