Grandstream GBX20 Extension Module

In stock
MPN: GBX20 UPC: 06947273702931
Regular price $115.95

The Grandstream GBX20 Extension Module extends the capabilities of the GRP2615, GRP2624, and GXV3350 IP phones with additional programmable buttons and a color LCD display. The Grandstream GBX20 provides a total of 40 programmable buttons that can be used for directory numbers, speed dial, or feature keys. The Grandstream GBX20 is ideal for receptionists or users who handle heavy call volumes.


  • Programmable Buttons: 40 programmable buttons with LED’s (20 buttons, 2 pages)
  • Monitor Line Status: Programmable keys support advanced features such as Monitor Call, Monitor Phone, Transfer, Park, and Speed Dial
  • Display: 4.3-inch, 272x480 pixel resolution, backlit color LCD display
  • Expandable: Up to 4 GBX20 modules can be added per phone
  • Simplify Dialing: Programmable buttons can be used for directory numbers, speed dial, or feature keys

Compatible Telephones

  • Grandstream GRP2615 IP Phone
  • Grandstream GRP2624 IP Phone
  • Grandstream GXV3350 IP Phone

Power Requirements

  • When adding 1 GBX20 module - Powered through host phone, no additional power supply is needed
  • When adding 2-4 GBX20 modules – Requires additional power supply (Included)

Package Contents

  • GBX20 Expansion Module
  • Desk Stand
  • Connecting Bracket with Screw
  • USB Interface Cable
  • 12V Power Adapter

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