-Phoenix Audio Quattro conferencing speakerphone- USB daisy chain interface- Designed for large conference room settings, but the small and sophisticated design makes it the perfect solution formedium size conference rooms as well- Easy to install: no software to download no discs to upload, justconnect it to your network and make yourcalls- Easy to use: utilizes your current phone or soft phone to place calls, speed dial, set upconferences, call forward, put a call on hold, and all of the other features of your current phone system- Expandability: units can be daisy chained together in a virtually unlimited string to satisfy any size or shaped room- 4 Highly efficient speakers for exceptional output levels- Thereis no other speakerphone with such an extended audio pickup and audio broadcasting range. It is brimming with advanced and complicated technology on the inside but yet very simple and intuitive to use and operate.- For VoIP applications: connectsdirectly to your computer through the USB port and works right out of the box, no installation or drivers required (and it supports a sampling rate of up to 44 KHz)- At the same time, the Quattro connects directly to your telephone line and communicates with your PBX in a manner that guarantees robust and optimum performance- A three-way bridge can also be created between your computer, your conferencing room, and your telephone line. Thisopens many more possibilities to serve your conference needs.- Incorporates your telephone into your conference calling experience: all of your company directory numbers, speed dialing, and conferencing calling features you currently use, are used to make a call; just initiate the call from yourown phone and press one button on the Quattro to move the conference over - No learning curve ormissed feature sets: everyone is productive the moment they enter the room! - If a key pad is required for your application, an external dial padis available to order (sold separately)- Direct connection to the telephone line (unlike connecting to the telephone