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Grandstream Networks GXP2200EXTbacklit LCD extension module, 20 dual-colored extension keys The GXP2200EXT extension module is supported by the GXP2140, GXP2170 and GXV3240. The mo
Grandstream Networks GXP2020EXT IP add-on moduleGXP2200EXT Expansion Module The GXP2200EXT is the extension module that can be added to the GXP2140 and GXP2200 Enterprise IP phones. The module incl
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