Grandstream GBX20 IP Phone Expansion Module GBX20-EXT Parrot_Magnetic Chalkboards Includes multiple pockets and sections

Includes multiple pockets and sections to organise accessories

An essential stereo headset for either personal use or the office

Easy set up and energy savings

These are thicker than current industry standard 18AWG cables

With a promising cooling ability

Grandstream GBX20 IP Phone Expansion Module GBX20-EXT Parrot_Magnetic Chalkboards Includes multiple pockets and sectionsGrandstream GBX20 IP Phone Expansion Module The GBX20 is a backlit LCD extension module supported by the GXV3350, GRP2615 and GRP2624. The module includes 20 dual colored extension keys and 2 arrow keys for page switching (allowing each GBX20 to support up to 40 contacts extensions.). Connect up to 4 GBX20 modules to compatible Grandstream phones for a total of 160 contacts extensions. The GBX20 is an Extension Module that adds functionality,