Features2 SIP account, 2 lines GDMS Online device management and provisioning 5-way audio conferencing for easy conference calls Equipped with Noise Shield technology to minimize background noise Electronic Hook Switch (EHS) support for Plantronics, Jabra and Sennheiser Headsets The GRP2601P has built-in PoE to power the device and allow it to connect to the network. Enterprise-level protection including secure boot, dual firmware images and encrypted data storage