Grandstream GXP2200EXT Expansion Module for VoIP PhoneGrandstream Expansion Module for VoIP Phone Price in Pakistan is on Inquiry . The Grandstream GXP2200EXT Expansion Module enhances call management and productivity for users handling large contact lists and high call volumes. Featuring a 128x384 backlit LCD display, it provides 20 dual colored programmable keys and 2 arrow keys for page switching, allowing up to 40 contacts per module. With the ability to daisy chain up to 4 modules, it supports