The GXP1200 is a very affordable 2-line entry-level SIP phone that delivers excellent sound quality and advanced feature set. The GXP1200 supports traditional telephony features such as caller id, call waiting, mute, park, hold, transfer and voicemail as well as advanced enterprise features such as 2 independent SIP accounts, multi-language support, 3-way conferencing, and custom ring-tones for distinctive call handling.