science

Tandberg E20

Tandberg E20 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 Tandberg E20 rather than just read about it. In short: The E20 is an entry-level personal videoconferencing system produced by the Norwegian company Tandberg. The E20 was introduced in 2008, and started shipping in Q1 2009.

Key takeaways

Tandberg E20 belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Tandberg E20 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Tandberg E20 from memory before moving on to harder problems.

Reference excerpt

The E20 is an entry-level personal videoconferencing system produced by the Norwegian company Tandberg. The E20 was introduced in 2008, and started shipping in Q1 2009. The system is intended as a replacement for traditional office telephones. It features a 10.6-inch (270 mm) LCD widescreen, a five-megapixel camera, CD quality audio and DVD-quality video. As a standards based SIP system, the Tandberg E20 supports MPEG-4 AAC-LD for audio and H.264, H.263+, and H.263 for video. The E20 is compatible with Tandberg's new large-scale provisioning solution, introduced in November 2009. Tandberg were acquired by Cisco in 2009, and subsequently took over the Tandberg Video Conferencing line, integrating this within the Cisco Telepresence product line. The E20 was migrated to this portfolio, however was made end-of-life in 2012, superseded by desktop solutions such as the DX70 and DX80 product lines.

References

Illustrations

Worked examples

Example 1 — a first encounter with Tandberg E20

Start with the simplest possible case. Write down what Tandberg E20 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 Tandberg E20 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 Tandberg E20 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 Tandberg E20

In research: Tandberg E20 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 Tandberg E20 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: Tandberg E20 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Tandberg, Teleconferencing, so understanding it makes those chapters shorter.
In everyday life: Look for Tandberg E20 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 Tandberg E20 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Tandberg E20 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 Tandberg E20 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Tandberg E20 in simple terms?

The E20 is an entry-level personal videoconferencing system produced by the Norwegian company Tandberg. The E20 was introduced in 2008, and started shipping in Q1 2009.

Why does Tandberg E20 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 Tandberg E20?

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 Tandberg E20.