Centrex Services

With each Centrex line, you have a set of Centrex services (some services may not be available on all lines). Table 3-1 lists some of the most popular Centrex services.

To complement your Centrex services, your equipment controller provides additional features. You can use Table 3-1 to identify the services you have on your Centrex system; then see Chapter 4 for more information on equipment features you may want to add to your system.

Centrex services are supplied by your local telephone company; see the Centrex documentation provided by your local telephone company for more specific information on the services available with your system. Also, be aware that the names of services may vary depending on the supplier. You can use the System Planner to record the services available on each line in your system.

NOTE:

Many Centrex services are accessed by pressing the switchhook on a standard phone, then dialing a Centrex feature code. On an MLS- or MLC-model phone, however, use the Recall feature to send a timed switchhook flash and then dial the Centrex feature code—see Chapter 5 for instructions on programming the Recall feature on a button and Chapter 6 for instructions on using the Recall feature. Pressing the switchhook on an MLS- or MLC-model phone disconnects the current call instead of sending a switchhook flash.

Table 3-1. Examples of Popular Centrex Services

Name

Description

Abbreviated

Lets users call another Centrex extension by dialing a short code (or “Centrex

Extension Dialing

extension ID”).

 

 

Call Detail

Records calling statistics for each Centrex line; reports are sent periodically

Recording

from the telephone company.

 

 

Call Forwarding

When a caller gets a busy signal, forwards the call from the busy line to a

(Busy)

designated number.

 

 

Call Forwarding

When a caller gets no answer within a designated number of rings, forwards

(No Answer)

call from the unanswered line to a designated number.

 

 

Call Forwarding

Forwards all calls to a number specified by the user when the feature is

(Send All Calls)

activated. (User may be able to specify an inside or outside number.)

 

 

Call Hold

Puts a call on hold so that the user can place another call on the same line.

 

 

Call Pickup

Lets a user dial a code to pick up a call ringing at any extension in the pickup

 

group.

 

 

Call Waiting

When an inside caller gets a busy signal, the caller can dial a code to send a

 

“call waiting” tone to the dialed extension. The party dialed can then pick up

 

the call or hang up when finished with the current call (the waiting calI rings).

 

Another form of Call Waiting supplies a “call waiting” tone whenever a call

 

comes in on a busy line; the caller does not have to dial a code to send the

 

signal.

 

 

Conference

Lets a user speak with several parties at the same time.

 

 

Dial-Out Code

Requires that users dial a code (usually “9”) before dialing an outside number.

 

If a dial-out code is required, this code should be programmed for the

 

premises equipment using the PBX Dial-Out Code (#106) procedure. See

 

page 5-10.

 

 

Using the Equipment 3-5

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AT&T II manual Examples of Popular Centrex Services, Name Description
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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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