I would like 3.5 stars. You work most of the time. We have Yealink t42g and Jabra Pro 9450 on about 25 phones. We've had 3 that randomly caused the phone to jump between on-hook and off-hook for some reason. He made random calls or simply picked up the phone when no one was around. In addition, they work as expected and do what we need. UPDATE * Had to remove a star, I have one or two of these a month dying or causing problems. Purchase additional ones if you need to use them.
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