Description The GBX20 is an Extension Module that adds functionality, versatility and flexibility to Grandstreams GRP2615 / GRP2624 Carrier-Grade IP Phone and GXV3350 IP Video Phone. It features a 272×480 LCD display that offers up to 40 contacts per module with support for up to 160 contact s by using 4 modules. The GBX20 supports a wide-range of advanced call features including BLF, call park /pick-up, speed-dial, presence, intercom, voice conferencing transfer/forward and much more. An ideal solution for businesses and receptionists managing high call volumes, the GBX20 ensures maximum productivity by efficiently monitoring and dispatching incoming calls. Features 4.3 inch (272×480) TFT colour LCD 20 per page (each module contains 2 pages, for up to 40 lines per module) Combine up 4 daisy-chained modules for 160 contacts/extensions BLF, call park /pick-up, speed-dial, presence, intercom, voice conferencing transfer/forward and more The GBX20 is compatible with the following handsets: GRP2615 GXV3350 IP Video Phone
