I'll start by saying the cost of these things is ridiculous, especially considering how far technology has advanced and that corded phones have not been common in homes for decades. That being said, in business you need reliable phones, and nothing beats a wired connection. We use a VOIP service for our work phones and all the VOIP companies had 5000 series conference phones. The CEO even hated them with boom mics (didn't hear anyone) so I tried a cheaper alternative with two "bases". They didn't do well so I bit the bullet, spent triple the money and got 2 of them bundled with a multi-interface module. Since then I haven't heard any more complaints.
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