Your receptionist is juggling thirty calls and she can't see who's ringing on which line. Or your floor manager needs to park a call, speed-dial the warehouse, and check presence — all without lifting their head off the spreadsheet. The GBX20 is an LCD extension module that clips onto the Grandstream GRP2615 or GXV3350 (those two models only — it won't fit anything else). 4.3-inch colour screen showing up to 40 lines per module. Stack four of them for 160 extensions. BLF, call park and pick-up, speed-dial, presence, intercom, transfer, forward — all visible at a glance. If your front desk is running on a single phone and a sticky note, this is the upgrade that actually helps. In stock in Australia
