14 lines, 6 SIP accounts Supported by GDMS which provides a centralized interface to configure, provision, manage and monitor Grandstream devices RJ9 headset jack allowing EHS with Plantronics headsets, and integrated USB Headset support Full-duplex speakerphone with HD audio to maximize audio quality and clarity Equipped with noise shield technology to minimize background noise Dual switched autosensing 10/100/1000 Mbps Gigabit Ethernet ports with integrated PoE Supports 5-way audio conferencing for easy conference calls Enterprise-level security protection including secure boot, dual firmware images, and encrypted data storage Swappable faceplate to allow for easy logo customization Integrated dual-band Wi-Fi 802.11 a/b/g/n/ac (2.4Ghz & 5Ghz)