Reference:
GRP2612
The Grandstream GRP2612 telephone is an operator grade 2-line IP telephone designed with automatic provisioning for easy handling and power. It includes 16 virtual multipurpose keys (VPKs), a color LCD screen with interchangeable faceplates to allow easy customization of the logo as well as other functions. Furthermore, this GRP series includes operator-grade security features to provide enterprise-level security, such as secure boot, dual firmware images, and encrypted data storage. This phone also has the support of the cloud service called Grandstream Device Management System (GDMS).