Tandberg
Manufacturer of videoconferencing systems
Tandberg was an electronics manufacturer located in Oslo, Norway (production, sales and distribution) and New York City, United States (sales and distribution). The company began in the radio field, but became more widely known for their reel-to-reel tape recorders as well as cassette decks and televisions. The original company went bankrupt in 1978, after a sharp financial downturn. The following year, the company re-formed whilst its data division was split off as Tandberg Data, including the tape recording division, which reduced its scope to data recording.
Over time the original Tandberg company became increasingly involved in the teleconferencing systems, and became a leader in that field. The company's main competitor was Polycom and other competitors were HP, Sony, Radvision, VTEL and Aethra.
Cisco Systems acquired Tandberg on 19 April 2010. Tandberg Data became a German company dedicated to making computer tape storage systems.
History
Tandbergs Radiofabrikk
The company was founded by Vebjørn Tandberg as Tandbergs Radiofabrikk (Tandberg's Radio Factory) in Oslo in 1933. The company's first radio was named "Tommeliten" (Tom Thumb), and used only earphones.
Begin with the source’s own compact description: “Tandberg” is manufacturer of videoconferencing systems. The dossier treats that line as a proposition to test through Tandberg, Manufacturer and videoconferencing, not as a finished interpretation.
Why this record matters
The phrase “manufacturer of videoconferencing systems” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jun 15, 2026. The linked authority identifier is Q1769702. None of the 2 selected statements returned an explicit reference. The first chronological checks are 1978, 2010 and 1933.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Tandberg”, its source revision and the description used here.
- Expand the search: follow Tandberg primary sources, Tandberg archive and Tandberg research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Tandberg”?
- What terminology or title could unlock a more precise catalogue search?
- Which cited source is closest to the event, object or claim?
Search terms from this dossier
This entry incorporates text from “Tandberg” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.