SoundPoint IP 331 - this SIP phone with 2-line, which has excellent sound quality and the whole spectrum of IP telephony. SoundPoint IP 331 has a single 10/100 Ethernet port, through which it can be used in areas such as lobbies, hallways, break rooms. It is also possible for wall mounting. SoundPoint IP 331 phone has a full-duplex speaker (IEEE 1329 Type 1) c of the legendary Acoustic Clarity Technology from Polycom, which provides excellent sound quality and free from echo and noise communication, if the conversation is with someone close to you. Phone is configured through an intuitive user interface for features such as call hold, call park, off-hook, call transfer and three-way conference, as well as more advanced functions, such as the use of a common line, XHTML support, and treatment of different types of calls.