The Plantronics CS50 USB cordless headset was launched in 2005 and has been succeeded by later models such as the CS65 as this article is penned. cs50_usb.pdf
The CS50 USB was a convenient 900MHz wireless head-set for VoIP applications letting you take the conversation wherever you go with remarkable range and sound quality for crystal clear communications.Â Designed for PC softphone users its instant USB connectivity for quick setup was supposed to be simple â€“ but some people did have problems with latter versions of Microsoft Windows software. (perhaps this is why it was withdrawn from global sales)
The CS50 USB enabled you to â€œLeave your desk without leaving your calls behind. It had superior Sound Quality and Hands-Free Convenience; a noise-cancelling microphone that filters out background noise; up to eight hours talk time per battery charge; roam up to 300 feet from your office phone; remote ring detection; call control at your fingertips; volume +/-; Convertible: over-the-ear, over-the-head or optional neckband for behind-the-head.
To resolve your query regarding the CS50 USB contact TelephoneSystemsDirect on 0800 652 8052.