Description
A backlit LCD extension module supported by the GRP2615 GRP2624 GRP2650 GRP2670 carrier-grade IP phones as well as and GXV3350 and GXV3450 IP video phones.
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.
BLF call park /pick-up speed-dial presence intercom voice conferencing transfer/forward and more.
1 Year Manufacturer's Warranty.
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