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.
Opto Network Private Limited is an Internet Telephony Service Provider in India. Head office is in Noida, India, Band having branches in Bangalore and Mumbai.