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  2. Tellabs - Wikipedia

    en.wikipedia.org/wiki/Tellabs

    In September 1981, Tellabs introduced the industry's first echo canceller, an advance over the original echo suppressors that synthesized an echo and electronically subtracted it. By 1990, Tellabs had grown to 2,000 employees at 25 locations globally and sales of $211 million.

  3. Echo suppression and cancellation - Wikipedia

    en.wikipedia.org/wiki/Echo_suppression_and...

    The performance of an echo canceller is measured in echo return loss enhancement (ERLE), [3] [9] which is the amount of additional signal loss applied by the echo canceller. Most echo cancellers are able to apply 18 to 35 dB ERLE. The total signal loss of the echo (ACOM) is the sum of the ERL and ERLE. [9] [10]

  4. Michael Birck - Wikipedia

    en.wikipedia.org/wiki/Michael_Birck

    Michael J. Birck (January 25, 1938 – July 6, 2015) was a co-founder and chairman of Tellabs Inc. He began his career at Bell Telephone Laboratories, and helped found Tellabs in 1975. He served as the CEO of the company from 2002 to 2004.

  5. Let's See If Tellabs' Growth Is for Real - AOL

    www.aol.com/2011/12/17/lets-see-if-tellabs...

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  6. A Hidden Reason Why the Future Looks Bright for Tellabs - AOL

    www.aol.com/news/2011-10-26-a-hidden-reason-why...

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  7. 2 Positive Signs for Tellabs - AOL

    www.aol.com/2011/09/17/2-positive-signs-for-tellabs

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  8. Echo canceller - Wikipedia

    en.wikipedia.org/?title=Echo_canceller&redirect=no

    Language links are at the top of the page across from the title.

  9. What Tellabs Does With Its Cash - AOL

    www.aol.com/2012/05/21/what-tellabs-does-with...

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