Cisco 6921 Unified IP Phone

6921 Unified IP Phone is a new and innovative portfolio of endpoints that deliver affordable, business-grade, voice communication services to customers worldwide. It support full-duplex speakerphones for a more productive, more flexible, and easier-to-use endpoint experience and introduce support for single-call per-line appearance, offering a traditional telephony-like interaction for customers who seek this type of call experience for their users. Fixed keys for hold, transfer, and conference; tri-color LED line and feature keys also make the phone simpler and easier to use.