The Grandstream GBX20 is an advanced extension module designed for use with the GRP2615 and GXV3350 devices, providing enhanced functionality and usability for users.

This module features a large color LCD display, programmable keys, and a user-friendly interface to support efficient call management.

• Large backlit color LCD display for easy visibility
• Supports up to 20 programmable keys for quick access
• Compatible with Grandstream GRP2615 and GXV3350 models
• Easy setup and configuration through intuitive interface
• Enhanced call management capabilities