Grandstream GBX20 IP Phone Expansion Module GBX20-EXT Parrot_Laminating Pouches Lexmark 52D5000

Lexmark 52D5000

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Grandstream GBX20 IP Phone Expansion Module GBX20-EXT Parrot_Laminating Pouches Lexmark 52D5000Grandstream GBX20 IP Phone Expansion Module The GBX20 is a backlit LCD extension module supported by the GXV3350, GRP2615 and GRP2624. The module includes 20 dual colored extension keys and 2 arrow keys for page switching (allowing each GBX20 to support up to 40 contacts extensions.). Connect up to 4 GBX20 modules to compatible Grandstream phones for a total of 160 contacts extensions. The GBX20 is an Extension Module that adds functionality,