3 lines, 6 SIP accounts, up to 3 call appearances
Zero touch provisioning using Grandstream Device Management System (GDMS)
Electronic Hook Switch (EHS) support
10 built-in BLF keys
Full-duplex speakerphone with HD audio
Noise shield technology
5-way audio conferencing
Swappable faceplate to allow for easy logo customization
Dual switched autosensing 10/100/1000 Mbps Gigabit Ethernet ports with
integrated PoE (GRP2604P only)