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Overview Grandstream GXP-2000 is a next-generation enterprise SIP telephone that is feature rich, easy to use, supports Power-over-Ethernet. The GXP-2000 features intuitive user interfaces, four (4) individual lines, dual 10/100mbps Ethernet ports, graphical LCD display and a secure central configuration. This SIP phone combines feature functionality with the latest technology to offer excellent audio quality, ease of use, expandability, and broad interoperability with 3rd party SIP platforms. I