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. The GXP1200 also supports a broad range of voice codecs and features dual 10/100mbps auto-sensing Ethernet ports with integrated Power over Ethernet, headset jack, and secure central configuration file for mass deployment. GUI web interfaces make the GXP1200 quick and easy to install and manage. Broad interoperability with major SIP based platforms ensures compatibility with any IP communications system. Its easy installation, hands-free duplex speakerphone, backlit graphic LCD display, eight dedicated function keys, and XML applications make the GXP1200 a very cost-effective choice for any business that needs a feature rich two line IP phone.Features & BenefitsTechnical Features & Benefits* SIP 2.0, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS (A record and SRV), DHCP (both client and server), PPPoE, TFTP, NTP, Telnet * Dual switched 10/100Mbps Ethernet ports w/integrated Power-over-Ethernet (802.3af) Feature SpecificationsSIP Compliant and Protocols SIP, TCP/IP/UDP, RTP/RTCP, HTTP, ARP, ICMP, DNS (A record and SRV), DHCP(both client and server), PPPoE, TFTP, NTP, etc. Networking Interfaces Dual 10/100mbps Ethernet ports. Voice Codecs G.711 (a/u-law), G.723.1, G.729A/B, G.726, GSM, iLBC, and G.722 (wideband). Superb Audio Quality Advanced Digital Signal Processing (DSP), Silence suppression, VAD, CNG, AGChigh fidelity wideband audio (G.722). * Support NAT traversal (STUN, etc), server fail-over, SIP presence (SIMPLE), and more