Using Your Telephone

The charts below explain how to handle calls with MLS- and MLC-model phones and standard phones. When prior programming is required for MLS- or MLC-model phones, the page number for instructions is shown in the left column.

Accessing a Centrex Service

 

 

On an MLS- or MLC Model

On a Standard Phone

 

 

Phone*

 

 

To access a Centrex

While the phone is idle...

While the phone is idle...

 

service

1. Lift the handset.

1. Lift the handset.

 

 

 

 

2. Dial the Centrex feature code.

2. Dial the Centrex feature code.

 

 

If the feature code is programmed on a

You can press the programmed button

 

 

button, press the button instead.

if you are using a feature phone.

 

 

While active on a call...

While active on a call...

 

 

1. Press a button programmed with Recall

1. Press the switchhook.

 

 

or dial [ Feature ] [ 0 ] [ 3 ].

2. Dial the Centrex feature code.

 

 

 

 

 

2. Dial the Centrex feature code.

You can press the programmed button

 

 

If the feature code is programmed on a

if you are using a feature phone.

 

 

button, press the button instead.

 

 

 

 

 

* If you are using an MLC-6 cordless phone, make sure the handset is on before following these instructions. For more information on using the MLC-6 phone, see AT&T MLC-6 Cordless Telephone Quick Reference: Display and Controls

Placing a Call

You can place a call by dialing a phone number or Centrex extension number. (See the Centrex documentation provided by your local telephone company for dialing instructions.) (In some instances, you can also place intercom calls. For information on placing intercom calls, see Appendix B.) There are also several ways to speed dial a number that has been stored in your telephone or in the equipment controller. Note that Centrex may provide dialing restrictions for limiting access to certain calls on each Centrex line. In addition to these restrictions, your equipment controller can be programmed to further control telephone use at specific extensions. (For example, the user at an extension may not be allowed to dial 900 numbers.) If a System Password has been programmed, you can enter the password to override equipment dialing restrictions (see page 6-18).

 

 

On an MLS- or MLC Model

On a Standard Phone

 

 

Phone*

 

 

 

 

 

 

To make an outside call

1. Lift the handset or press [ Spkr ].

1. Lift the handset.

 

on your primary line

You hear the Centrex dial tone. The line

You hear the Centrex dial tone.

 

 

button light is steady green.

2. Dial the number according to your

 

 

 

 

 

2. Dial the number according to your

Centrex instructions.

 

 

Centrex instructions.

 

 

 

On MLS display phones, the dialed number

 

 

 

is shown, and the call timer begins.

 

 

 

 

 

*If you are using an MLC-6 cordless phone, make sure the handset is on before following these instructions. For more informatlon on using the MLC-6 phone, see AT&T MLC-6 Cordless Telephone Quick Reference: Display and Controls.

6-12Using Telephones

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AT&T II manual Using Your Telephone, Accessing a Centrex Service, Placing a Call, 12Using Telephones, On your primary line
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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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