Products tagged with 'grandstream gbx20 ext ip phone extension module'

Grandstream GBX20 EXT IP Phone Extension Module

GST-0093
The GBX20 is a backlit LCD extension module supported by the GXV3350 and GRP2615. 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.
$168.20 incl tax