"The Polycom SoundPoint IP 321 two-line SIP phone that delivers superb sound quality as well as a wide range of supported business telephony features. The Polycom SoundPoint IP 322 phone has a single 10/100 Ethernet port, therefore its application targets include common areas, such as lobbies, hallways, and break rooms, as well as various wall-mounted deployments. The SoundPoint IP 321 phone features a full-duplex IEEE 1329 Type 1-compliant speakerphone with Polycom's legendary Acoustic Clarity Technology that enables clear, noise-free and echo-free conversations that are as natural as being there. The SoundPoint IP 321 phone delivers through an intuitive user interface a full feature set encompassing both traditional business telephony features such as call hold, park, pick-up, transfer, and three-way local conferencing, and more advanced capabilities such as shared call/bridged line appearance, support of XHTML applications, and distinctive call treatment. The SoundPoint IP 321 phone is engineered to make installation, configuration, and upgrades as simple and efficient as possible. The phone's standard base stand can be reversed to become a wall mount, eliminating the need for a separate accessory. ***POWER SUPPLY NOT INCLUDED***"