The GRP2616 is a high-end carrier-grade IP phone designed with zero-touch provisioning for mass deployment and easy management. It supports 6 lines and 6 SIP accounts while featuring a sleek design and a suite of next-generation features including integrated Wi-Fi, Bluetooth support, 48 virtual multi-purpose keys (MPKs), dual Gigabit ports and more. This device features a 4.3-inch color LCD screen with swappable faceplates to allow for easy logo customization and an additional 2.4-inch display screen. The GRP series includes carrier-grade security features to provide enterprise-level security, including secure boot, dual firmware images, and encrypted data storage. For cloud provisioning and centralized management, the GRP2616 is supported by the Grandstream’s Device Management System (GDMS), which provides a centralized interface to configure, provision, manage and monitor deployments of the Grandstream endpoints. Built for the needs of busy desktop workers and designed for easy deployment by enterprises, service providers and other high-volume markets, the GRP2616 offers an easy-to-use and easy-to-deploy voice platform.

Power
Power & Green Energy Efficiency	Universal power adapter included: Input:100-240V ; Output: +12V, 1A ; Integrated Power-over-Ethernet(802.3af) Max power consumption 6.1W(power adapter) or 7.8W(PoE)
Security features
Encryption	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
HARDWARE FEATURES
Auxiliary Ports	RJ9 headset jack (allowing EHS with Plantronics headsets), USB
Base Stand	Yes, 2 angle positions available, Wall Mountable
Networking Interface	Dual switched auto-sensing 10/100/1000 Mbps Gigabit Ethernet ports with integrated PoE
Standards and Protocols	SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS(A record, SRV, NAPTR), DHCP, PPPoE, TELNET, TFTP, NTP, STUN, SIMPLE, LLDP, LDAP, TR-069, 802.1x, TLS, SRTP, IPV6
HARDWARE SPECIFICATION
USB Port	Yes
Technical
QoS	Layer 2 QoS (802.1Q, 802.1P) and Layer 3 (ToS, DiffServ, MPLS) QoS
VOICE
HD Voice	Yes, HD handset and speakerphone with support for wideband audio
Display
Graphics	4.3 inch (480x272) TFT color LCD, 2.4 inch (240x320) additional screen
WIRELESS
WIFI	Yes, integrated dual-band Wi-Fi 802.11 a/b/g/n/ac (2.4Ghz & 5Ghz)
SPECIFICATIONS
Feature Keys	6 dual-color line keys with up to 6 SIP accounts(can be digitally programmed as up to 24 provisionable BLF/fast-dial keys), 5 XML programmable context sensitive softkeys, 5 navigation/menu keys, 10 dedicated function keys for:MESSAGE(with LED indicator),PHONEBOOK,TRANSFER,CONFERENCE,HOLD, HEADSET, MUTE, SEND/ REDIAL, SPEAKERPHONE, VOL+, VOL-
Telephony Features	Hold, transfer, forward, 3-way conference, call park, call pickup, shared-callappearance(SCA)/bridged-line-appearance(BLA), downloadable phonebook(XML, LDAP, up to 2000 items), call waiting, call log(up to 2000 records), XML customization of screen, off-hook auto dial, auto answer, click-to-dial, flexible dial plan, hot-desking, personalized music ringtones and music on hold, server redundancy and fail-over
Voice Codecs and Capabilities	Support for G7.29A/B, G.711µ/a-law, G.726, G.722(wide-band), G723, iLBC, OPUS, in-band and out-of-band DTMF(in audio, RFC2833, SIP INFO)
ENVIRONMENT
Operating Temperature	Operation: 0°C to 40°C Storage: -10°C to 60°C
Operating Humidity	10% to 90% Non-condensing
SOFTWARE
Multi-language	English, German, Italian, French, Spanish, Portuguese, Russian, Croatian, Chinese, Korean, Japanese and more
Upgrade/Provisioning	Firmware upgrade via FTP/TFTP / HTTP / HTTPS, mass provisioning using GDMS/TR069 or AES encrypted XML configuration file.