HD Voice
Polycom's revolutionary HD Voice technology features wideband audio for over twice the voice clarity in calls from one Polycom phone to another. Incorporates Polycom's patented Acoustic Clarity Technology for crystal-clear, noise- and echo-free sound, plus best-in-class system design for high-fidelity, faithful voice reproduction.

Audio Quality
Quality of the voice sound in terms of clarity and reproduced life-like sound. Speakerphone refers to the ability of the phone to pickup voice sounds from a distance and accurately reproduce them.

Backlit LCD
The backlit liquid crystal display is where you read set up instructions, call information and system status. A backlit display makes it much easier to read, especially if you work in a poorly lit office.

High Resolution Display
Easy to read display for phone set up, call information, system status and future applications.

WebLINK Compatible
WebLINK is FreedomVOICE Systems' Internet Control Panel where you can setup your phone system, change any of the settings instantly and add additional phone stations, a wide variety of business-enhancing services and new features the instant they are made available. The WebLINK user interface is extremely easy to use so you manage your phone system effectively and efficiently.

Expansion Module Support
These phones support the use of Expansion Modules which provide additional keys for expanded call handling functionality, such as speed dials, buddy indicators, call parking or line appearance.

Power over Ethernet (PoE)
Power over Ethernet (PoE) technology transmits electrical power, along with data, to remote devices over standard electric cable in an Ethernet network. With a PoE switch, your phone will be powered directly from its network cable.

Lines Supported
The number of individual phone lines the phone can handle. Each of the "Line" buttons can have several uses. First, it can represent a Line Appearance, essentially another phone number from which you can send and receive calls. Second, it can represent a speed dial number. Third, it can be a status/buddy indicator for another line. For example, a secretary may have a button assigned for his/her boss, which would light whenever the boss is on the phone. Otherwise, it functions as a speed-dial, allowing easier transfers. Fourth, it may act as a call-park/queue indicator. If you wanted to pick up a call from another desk, you could park the call in the holding lot and pick it up from another phone. A button could be assigned to represent that parking lot. One of the line buttons is always reserved for your "primary" direct inward dial number.