mathematics

Telephone numbers in Serbia

Telephone numbers in Serbia is a mathematics 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 Telephone numbers in Serbia rather than just read about it. In short: Telephone numbers in Serbia are administered by Regulatory Authority for Electronic Communications and Postal Services (RATEL), an independent regulatory authority. The telephone country code of Serbia is 381.

Key takeaways

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

Reference excerpt

Telephone numbers in Serbia are administered by Regulatory Authority for Electronic Communications and Postal Services (RATEL), an independent regulatory authority. The telephone country code of Serbia is 381. The country has an open telephone numbering plan, with most numbers consisting of a two- or three-digit area codes and six to seven digits for the subscriber number.

Overview The telephone country code of Serbia is 381. Serbia and Montenegro received this country code following the breakup of the Socialist Federal Republic of Yugoslavia in 1992, which used country code 38. Montenegro switched to 382 after its independence in 2006. An example for calling telephones in Belgrade, Serbia is as follows:

xxx xx xx (telephone number in Serbia) 011 xxx xx xx (house number in Belgrade) +381 xx xxx xx xx (outside Serbia) For domestic calls (within the country), 0 must be dialled before the area code. For calls from Serbia, the prefix for international calls was 99, but was changed to 00 on 1 April 2008, in accordance to the recommendations of the International Telecommunication Union (ITU), and matching the majority of European countries. (e.g. for a United States number 00 1 ... should be dialled).

Landline telephony Area codes in Serbia have been largely unchanged since the time of Socialist Federal Republic of Yugoslavia. As Socialist Republic of Serbia had been assigned codes starting with 1, 2 and 3, they were simply carried over by Serbia after the breakup. Area codes:

Until 2013, Telekom Srbija had a monopoly on fixed telephony services. When the new regulation came in force, competition became allowed in this field as well, and other operators entered the market, using alternative communication infrastructure:

Orion Telekom – over CDMA SBB – over coaxial cable (cable TV infrastructure) Yettel Serbia – offering services only to business customers

Mobile telephony There are three active mobile operators in Serbia (without Kosovo):

Mobile Telephony of Serbia, styled as mts – subsidiary of Telekom Srbija Yettel Serbia A1 Serbia and three virtual mobile operators:

SBB Globaltel Vectone Mobile The calling codes are assigned to the operators using the following scheme:

Calling codes in the table are assigned to new customers by the respective provider. However, since 2011 customers can change the operator and retain the old calling code (along with the rest of the phone number). Thus, calling codes do not necessarily reflect the operator. It is not possible, however, to transfer a mobile number to a land-based operator and vice versa.

Special codes The following special telephone numbers are valid across the country:

In 2012, 2-digit emergency numbers were replaced by 3-digit ones (i.e. 192, 193 and 194 instead of 92, 93 and 94). This also applied to 976 (becoming 1976), 985 (becoming 1985), 987 (becoming 1987) and 9860 (becoming 19 860). 112 redirects to 192 on mobile phones.

Kosovo

The telephone country code for Kosovo is 383. This code is the property which it received by ITU through for the needs of the geographical region Kosovo as a result of the 2013 Brussels Agreement signed by the governments of Kosovo. Kosovo declared independence from in 2008, but retained country code 381 only for fixed-line telephony until 2016. Country code 383 was allocated on 15 December 2016.

Fixed-line telephony

Mobile telephony

See also Telecommunications in Serbia Country codes of Serbia

References

External links Republic Telecommunication Agency (RATEL)

Illustrations

Worked examples

Example 1 — a first encounter with Telephone numbers in Serbia

Start with the simplest possible case. Write down what Telephone numbers in Serbia claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In mathematics, 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 Telephone numbers in Serbia 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 Telephone numbers in Serbia 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 Telephone numbers in Serbia

In research: Telephone numbers in Serbia appears in mathematics 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 Telephone numbers in Serbia 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: Telephone numbers in Serbia is common in secondary-school and first-year university syllabi. It links to neighbouring topics Serbia communications-related lists, Telecommunications in Serbia, Telephone numbers by country, so understanding it makes those chapters shorter.
In everyday life: Look for Telephone numbers in Serbia 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 Telephone numbers in Serbia in 20 minutes

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

Frequently asked questions

What is Telephone numbers in Serbia in simple terms?

Why does Telephone numbers in Serbia matter?

Because it connects several mathematics 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 Telephone numbers in Serbia?

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 Telephone numbers in Serbia.