MLS- and MLC-Model Telephones

AT&T MLS- and MLC-model telephones are designed to make maximum use of the features provided by your system. The following models are available for use with your system:

■AT&T MLS-34D Telephone. This phone is the best choice for extensions used by the system manager (for equipment programming), receptionist, or operator. It has 32 buttons that can be used for outside lines or programmed for one-touch access to features. It also has a built-in speaker and microphone (for dialing and having a conversation without lifting the handset) and a large character display that shows the following:

■Current date, day, and time

■Number you dialed and elapsed time (when you make a call)

■Prompts and messages.

■AT&T MLS-12D Telephone. This phone has 10 buttons that can be used for outside lines or programmed for one-touch access to features (and 6 more buttons without lights that can only be used for programmable features). It has a built-in speaker and microphone, and a display similar to the one on the MLS-34D telephone.

NOTE:

An MLS-34D or MLS-12D telephone is required for equipment programming. Use the MLS-12D phone only if there are no MLS-34D phones installed at the site.

■AT&T MLS-12 Telephone. This telephone has all the features of the MLS-12D telephone, but without a display.

■AT&T MLS-6 Telephone. This phone has 4 buttons that can be used for outside lines or programmed for one-touch access to features. It also has a built-in speaker, but no microphone. This means that a user can dial a number without lifting the handset, but must lift the handset to speak when the party answers.

■AT&T MLC-6 Cordless Telephone. This cordless telephone works like the MLS-6 corded telephone. It has 4 buttons that can be used for outside lines or programmed for one-touch access to features. It also includes a display that shows line status, an On/Off button that must be pressed before using the phone (to save battery power), and additional feature buttons to support cordless operation (for more information, see MLC-6 Cordless Telephone Quick Reference: Display and Controls).

Auxiliary Equipment

The premises equipment works with many telecommunications devices, not only MLS- and MLC-model telephones. You can connect industry-standard devices to your equipment controller, and certain models of other devices, all without expensive adapters.

Overview 1-9

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AT&T II manual MLS- and MLC-Model Telephones, Auxiliary Equipment
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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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