The GBX20 is an Extension Module that adds functionality, versatility and flexibility to the GRP2615, GRP2624, GRP2650, GRP2670 carrier-grade IP phones as well as and GXV3350 and GXV3450 IP video phones. 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 color 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