Grandstream GXP2200EXT Expansion Module. Works with GXP2140/2200, GXV3240
GXP2200EXT delivers additional functionality, versatility and flexibility to Grandstream GXP2200 enterprise IP phone. The GXP2200EXT module features a large 128 x 384 graphic LCD and 20 programmable buttons (each with dual color LED). In addition, it allows up to 40 extensions per module by using the 2 page switch keys and up to 160 buttons when 4 extension modules are daisy-chained together. The GXP2200EXT module is connected, powered, and controlled by the GXP2200, providing the benefits of the additional keys instantly.