The Grandstream GXP2200EXT is the expansion module that has 40 additional display lines and can be used with the GXP2140 and the GXV3240.

The GXP2200EXT is a backlit LCD extension module supported by the GXP2140, GXP2170 and GXV3240. The module includes 20 dual-colored extension keys and 2 arrow keys for page switching (allowing each GXP2200EXT to support up to 40 contacts/extensions.). Connect up to 4 GXP2200EXT modules to compatible Grandstream phones for a total of 160 contacts/extensions.

The GXP2170 is an Enterprise IP Phone for users needing to handle daily high call volumes. The GXP2170 features up to 12 line keys and six SIP accounts on a full color 4.3 inch display. It also has a full duplex-speakerphone with HD audio capabilities for quality and clarity over voice calls.

The GRP2615 is a 10-line carrier-grade IP phone designed with zero-touch provisioning for mass deployment and easy management. Built for the needs of busy desktop workers and designed for easy deployment by enterprises, service providers and other high-volume markets, the GRP2615 offers an easy-to-use and easy-to-deploy voice platform.

The Poly VVX 350 is a 6 line color desk phone. For high-volume call environments that demand reliability, the VVX350 won't let you down.

The Poly VVX 450 is a 12 line color desk phone.  Handle high volume calls in a snap and be confident conversations will always sound great.

The GXV3370 IP Video Phone for Android™ offers a powerful desktop video phone featuring Android 7.0, a 7” touch screen, real-time HD video telephony, built-in WiFi & Bluetooth, and more.