Grandstream GBX20 Extension Module

Grandstream GBX20 Extension Module

  • Brand: Grandstream
  • Availability:In Stock
  • Product Code:Grandstream GBX20

Grandstream GBX20 is an extension module that adds functionality, versatility, and flexibility to Grandstream’s GRP2615 and GRP2624 Carrier-Grade IP Phones and the GXV3350 IP Video Phone.

Grandstream GBX20 Extension Module Features


  • 4.3 inch (272x480) 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


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