Discontinued.  See the new Polycom SoundPoint IP 335 2-line Phone w/Power Supply 

Polycom SoundPoint IP 430 two-line desktop IP phone is designed to meet telephony needs of general business users – cubicle workers involved with a low-to-medium volume of telephone calls. With its simple menu navigation, easy-to-read graphical LCD display, and convenient, one-button access to essential telephony features, the
SoundPoint IP 430 desktop phone provides an easy transition from legacy PSTN systems to the world of IP telephony.

The SoundPoint IP 430 desktop IP phone’s full-duplex speakerphone featuring Polycom Acoustic Clarity Technology delivers excellent voice quality and enables two-way interactive conversations that are as natural as being there. An enterprise-grade IP phone, the SoundPoint IP 430 delivers a robust feature set1 encompassing traditional telephony features such as call hold, park, pick-up, and transfer, as well as more advanced capabilities such as shared call / bridged line appearance, multiple call appearances, and integration with Microsoft LCS 2005 for telephony and presence. The phone's Quality of Service capabilities encompassing Layer 3 TOS, 802.1 p/Q VLAN tagging, and DSCP help ensure that a superb communications experience is delivered in a network environment.

With integrated IEEE 802.3af Power over Ethernet circuitry and a dual-port 10/100 Mbps Ethernet switch for PC and LAN connection, the SoundPoint IP 430 desktop phone offers a choice of powering and cabling options to help reduce cabling expenses and cord clutter. A highly secure IP telephony endpoint, the phone supports HTTPS and TLS security, "signed" software executables, and encrypted configuration files.

Key Features:

• Two lines
• Full-duplex speakerphone with Clarity by Polycom acoustic technology
• 132 x 46-pixel graphical LCD
• Integrated 802.3af PoE support
• Two-port 10/100 Ethernet switch
• Reversible base stand / wall mount
• Includes External Power Supply
• Dedicated RJ-9 headset port for Plantronics or GN headsets

For more details see Polycom IP 430 datasheet as well as Polycom IP Phone Reference Guide