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Local telephone service

Local telephone service is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Local telephone service rather than just read about it. In short: Local telephone service is the provision of telecommunications networks and services within a limited geographic region. Traditionally, local telephone service was provided by small companies based in given cities and towns as opposed to larger, national or international companies.

Key takeaways

  • Local telephone service belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Local telephone service to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Local telephone service from memory before moving on to harder problems.

Reference excerpt

Local telephone service is the provision of telecommunications networks and services within a limited geographic region. Traditionally, local telephone service was provided by small companies based in given cities and towns as opposed to larger, national or international companies. Telephone calls outside of the local area provided for by these companies were patched through long-distance networks that were, until de-regulation, operation mainly by AT&T. Some providers of local services were regional Bell operating companies, but not all local telephone companies were a regional Bell operating company or tied to one at the local level, especially after de-regulation of 1996. After de-regulation, these regional Bell operating companies continued providing the same technical services despite being under a different type of corporate structure. Many communities in the United States had local telephone companies and in rural areas, up until around the early 1980s (perhaps later in some cases) party lines were commonplace. The local telephone company was responsible for providing equipment and services to their customers in most cases although over time, as technology changed, so did the nature of the technical services thus provided. At one time telephones were leased from the local phone company rather than sold outright to customers. Many customers had rotary telephones that were leased prior to the 1980s. Despite the fact that the leasing system was not intended to promote this situation, customers in some cases ended up paying ten times the worth of their phones over the course of decades-long leases. Local telephone companies also provided PBX (Private Branch Exchange) services for local businesses that needed these switchboard and internal telecommunications services. Local telephone companies more recently become involved in providing Internet by DSL and dial-up services. Local telephone wires terminate at the central office (telephone exchange), a structure containing the hardware needed to switch calls among local lines and long-distance networks. Thus, when a call was placed by a customer outside the local calling area, the central office would switch the call to the respective long-distance network. As technology advanced, central offices offered more services and their technical abilities improved. Services such as Caller ID, call return call-waiting, three-way calling, and voice-mail were first offered via central office-based technology although later PBXs also provided them. The role of the local phone company includes serving a given community and interfacing with the large long-distance carriers. Prior to the advent of cell phones, most phone calls were made via landlines and local companies were thereby involved in some capacity in this communication. Deregulation and especially cell phones have reduced the need for local telephone services while Digital subscriber line Internet service and other services give local companies new roles in the telecommunications industry.

See also Access network Local exchange carrier Competitive Local Exchange Carrier (CLEC) Basic exchange telecommunications radio service Local access and transport area Regional Bell operating company Telephone Telephone exchange

External links FCC Carrier Search

Worked examples

Example 1 — a first encounter with Local telephone service

Start with the simplest possible case. Write down what Local telephone service claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Local telephone service before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Local telephone service ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Local telephone service

In research
Local telephone service appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Local telephone service in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Local telephone service is common in secondary-school and first-year university syllabi. It links to neighbouring topics Telephone services, so understanding it makes those chapters shorter.
In everyday life
Look for Local telephone service outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Local telephone service in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Local telephone service means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Local telephone service out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Local telephone service in simple terms?

Local telephone service is the provision of telecommunications networks and services within a limited geographic region. Traditionally, local telephone service was provided by small companies based in given cities and towns as opposed to larger, national or international companies.

Why does Local telephone service matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Local telephone service?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Local telephone service.

Tags

  • Telephone services

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