computer science

Placetel

Placetel is a computer 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 Placetel rather than just read about it. In short: Placetel is a German provider of cloud communication technologies based in Cologne. Products and services Placetel provides cloud-based telephone and communication technologies and systems, particularly cloud telephony, unified communications, and online collaboration tools for corporate use.

Placetel — illustration

Key takeaways

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

Reference excerpt

Placetel is a German provider of cloud communication technologies based in Cologne.

Products and services Placetel provides cloud-based telephone and communication technologies and systems, particularly cloud telephony, unified communications, and online collaboration tools for corporate use. The company primarily offers its own Webex-based UCaaS product, which include a comprehensive collaboration suite that integrates various team communication technologies into one application. Its VoIP-based phone system includes over 150 business functions, such as video conferencing, chat, and integrations with CRM, ERP & collaboration systems, like Salesforce and HubSpot, as well as Zendesk and Microsoft Teams. Placetel's cloud-based telephony system serves as an alternative to traditional telephone systems in offices and companies, enabling employees to make simultaneous calls from different locations and across multiple devices. The company also provides telephone numbers, including the option to add international numbers from 40 different countries. In addition to communication technologies, Placetel provides hardware such as desk phones, cameras, headsets, and Wi-Fi access points. These are also offered as rentals, including support services and replacement options.

History Placetel was founded in 2007 and launched its cloud telephone system in 2008. In 2012, Placetel entered into a partnership with Vodafone and set up a mobile extension for its system. In 2013, BroadSoft acquired Placetel, which later became part of Cisco after its acquisition in 2018. The company's international expansion began in 2021, with operations extending to the United Kingdom and France. In 2024, Gamma Communications, a British cloud communications provider, acquired Placetel from Cisco. The acquisition enabled Gamma to expand its presence in European markets.

References

External links Official Website

Illustrations

Worked examples

Example 1 — a first encounter with Placetel

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

In research: Placetel appears in computer 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 Placetel 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: Placetel is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cloud applications, German companies established in 2007, Information technology companies of Germany, so understanding it makes those chapters shorter.
In everyday life: Look for Placetel 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 Placetel in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Placetel 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 Placetel out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Placetel in simple terms?

Placetel is a German provider of cloud communication technologies based in Cologne. Products and services Placetel provides cloud-based telephone and communication technologies and systems, particularly cloud telephony, unified communications, and online collaboration tools for corporate use.

Why does Placetel matter?

Because it connects several computer 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 Placetel?

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 Placetel.