The B179 is a SIP-based conference phone delivering clear, natural sound from OmniSound 2.0, Avaya’s patented wideband audio technology. The phone is packed with intelligent features for more efficient conference calls. Use the conference guide to call pre-programmed groups. Import and export contact details conveniently via the web interface. Create your own contact list with the personal user profile feature. The Avaya B179 Conference Phone accommodates expansion microphones, an external wireless headset, and a PA system, making it ideal for large conferences.