The GRP2636 features 24 multi-purpose (MPK) extension keys with paper slot, integrated Wi-Fi and POE , a 4.3-inch LCD color LCD and more, and is supported by Grandstream’s Device Management System (GDMS). GDMS provides a FREE centralized interface to provision, manage, monitor and troubleshoot Grandstream products, including device management, account management, device configuration, firmware upgrades, device monitoring, intelligent alarm, and statistical analysis, individually or in batches of devices by site, group and model. This powerful cloud management platform adds robust security…. Sold and shipped by A5 IT, an authorized Grandstream partner — with US stock, live pricing, and deployment support for grp series of professional ip phones.