Let's Chat

Grandstream GBX20 Extension Module


Out of stock

ر.ق 675.00

Out of stock

The GBX20 is an Extension Module that adds functionality, versatility and flexibility to Grandstream’s GRP2615 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 contacts 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.


  • 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


Lines 20 per page (each module contains 2 pages, for up to 40 lines per module
Up to 160 with 4 daisy-chained modules
Compatible Grandstream IP Phones GRP2615 and GXV3350
Graphic Display 4.3 inch (272×480) TFT color LCD
Feature Support Local GUI: Multiple line/call appearances
Power A single GBX20 can be powered by host phone (GRP2615 or GXV3350); when 2 or more GBX20 are connected the included 12V/1A PSU will power the GBX20s.
Firmware Upgrades GBX20 firmware is upgraded by direct network download through host phone (GRP2615 or GXV3350)’s network connection and firmware upgrade setup.
Physical Dimension: 210mm*124mm*33.5mm; Unit weight: 360g; Package weight:700g
Temperature and Humidity Operation: 0°C to 40°C
Storage: -10°C to 60°C
Humidity: 10% to 90% Non-condensing
Package Content GBX20 Extension Board, base stand, Extension Board Connector Plate, Screws, USB cable, Quick Installation Guide, 12V/1A Power Adapter.
Compliance FCC: Part 15 Class B
IC: ICES-003
CE: EN 55032; EN 55035; EN 61000-3-2; EN 61000-3-3; EN 62368-1