• Display - 128 x384 graphic LCD
• Line Keys - 20 Lines
• Daisy Chain - 4 Modules for up to 160 programmable keys
• Compatible Phones - GXP2140, GXP2200, and GXV3240 Enterprise IP phones
• Call Handling - Busy Lamp Field (BLF), Speed dial for each line, Conference/call transfer/forward/pickup
• Protocol Support - Local feature-rich GUI with animation driven from the host phone; Multiple line/call appearances
• Power - The expansion modules are powered by the host phone
• Contents - Main Case, GXP2200EXT Stand, RJ11-RJ11 Cable, Connector Plate, Screws and Quick Installation Guide

GXP2200EXT delivers additional functionality, versatility and flexibility to Grandstream enterprise IP phone. The GXP2200EXT module features a large 128 x 384 graphic LCD and 20 programmable buttons (each with dual color LED). In addition, it allows up to 40 extensions per module by using the 2 page switch keys and up to 160 buttons when 4 extension modules are daisy-chained together. The GXP2200EXT module is connected, powered, and controlled by the phone, providing the benefits of the additional keys instantly.