Additional features include integrated PoE (on GXP1615 only) a 132×48 LCD screen for easy viewing, 3 XML programmable soft keys for customization, 10/100 mbps ports and EHS support for Plantronics headsets and multi-language support. These features allow the GXP1615 to be a high-quality Basic IP phone that is simple and easy-to-use.

As all Grandstream IP phones do, the GXP1615 features state-of-the-art security encryption technology (SRTP and TLS). The GXP1615 supports a variety of automated provisioning options, including zero-configuration with Grandstream’s UCM series IP PBXs, encrypted XML files and TR-069, to make mass deployment extremely easy.