3 lines, 6 SIP accounts, up to 3 call appearances
Supported by GDMS which provides a centralized interface to configure, provision, manage and monitor Grandstream devices
Electronic Hook Switch (EHS) support for Plantronics, Jabra, and Sennheiser headsets
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 (GRP2604P only)
Supports 5-way audio conferencing for easy conference calls
Enterprise-level protection including secure boot, dual firmware images, and encrypted data storage
Swappable faceplate to allow for easy logo customization

Features

Network Interfaces

Dual switched auto-negotiation 10/100/1000 Mbps Ethernet ports, integrated PoE
(GRP2604P only)

Graphic Display

132 x 64 (2.7’’) backlit graphical LCD display

Feature Keys

3 line keys with dual-color LED and support for 6 SIP accounts, 4 XML
programmable context sensitive soft keys, 5 (navigation, menu) keys. 10 BLF keys,
8 dedicated function keys for: MESSAGE(with LED indicator), TRANSFER, HEADSET,
MUTE, SEND/REDIAL, SPEAKERPHONE, VOL+, VOL

HD Audio Yes, HD handset and speakerphone with support for wideband audio

Security
User and administrator level passwords, MD5 and MD5-sess based authentication,
256-bit AES encrypted configuration file, SRTP, TLS, 802.1x media access control,
secure boot
Power & Green Energy Efficiency

Universal Power Supply Input 100-240VAC 50-60Hz; Output +5VDC, 600mA;PoE:
IEEE802.3af Class 2, 3.84W-6.49W; IEEE802.3az (EEE) (GRP2604P Only)
Temperature and Humidity
Operation: 0°C to 40°C
Storage: -10°C to 60°C
Humidity: 10% to 90% Non-condensing