The Grandstream GXP2200EXT is a versatile, high-tech attendant console for the Grandstream GXP2200, GXP2140 and GXP2170 phones. This expansion module supports the traditional call features on each of its programmable buttons, including BLA (bridged line appearance)/SCA (shared call appearance), BLF (busy lamp field, standard or eventlist), Call Park/Pick-up, Speed Dial, Presence, Intercom, and conference/ transfer/forward. The GXP2200EXT module features a large 128 x 384 graphic LCD and 20 programmable buttons (each with dual color LED). It also 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 IP Phone, providing the benefits of the additional keys instantly.