Description Grandstream GXP2200EXT Extension Module provides greater network control for high-call volume users with its backlit LCD display, BLF and Speed Dial keys and additional contacts/extensions per module. Supported by the GXP2140, GXP2170 and GXV3240. Features 128×384 backlit LCD display 20 programmable dual-color buttons per module, 2 pages per module (40 contacts total) BLF/speed dial Daisy-chain up to 4 modules for up to 160 contacts/extensions BLF (busy lamp field, standard or eventlist) Call Park/Pick-up, Speed Dial, Presence, Intercom, and conference/ transfer/forward and more
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