The function similar to “Call on Hold”, but in this case it is used during the video conference, by pressing the button, the video conference puts on hold mode.
The Blackwire C620-M by Plantronics is a USB binaural headset that was optimized to work in conjunction with Microsoft Lync. With its inline volume controls and support for wideband audio, the C620-m is designed for comfortable pleasantly fitting all day use.