• Part of the GRP series of Carrier-Grade IP Phones, the GRP2604 is an essential 3-line model designed with zero-touch provisioning for mass deployment and easy management. It features a sleek design and a suite of next generation features including: 5-way voice conferencing to maximize productivity, integrated PoE (GRP2604P), full HD audio on both the speaker and handset to allow users to communicate with the utmost clarity, EHS support for Plantronics, Jabra, and Sennheiser headsets and multi-language support. 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 GRP2604 is supported by Grandstream’s Device Management System (GDMS), which provides a centralized interface to configure, provision, manage and monitor deployments of Grandstream endpoints. Built for the needs of on-site or remote desktop workers and designed for easy deployment by enterprises, service providers and other high volume markets, the GRP2604 offers an easy-to-use and easy-to-deploy voice endpoint.
• 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 f irmware images, and encrypted data storage
• Swappable faceplate to allow for easy logo customization

Technical 

Protocols/Standards

• SIP RFC3261, TCP/IP/UDP, RTP/RTCP, RTCP-XR, HTTP/HTTPS, ARP, ICMP, DNS(A record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN, SIMPLE, LLDP, LDAP, TR069, SNMP, 802.1x, TLS, SRTP, IPv6

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-

Auxiliary Port

• RJ9 headset jack (allowing EHS with Plantronics & Jabra &Sennheiser headsets)

Voice Codecs and Capabilities

• Support for G.729A/B, G.711µ/a-law, G.726, G.722(wide-band), G.723,iLBC, OPUS, in- band and out-of-band DTMF(in audio, RFC2833, SIP INFO), VAD, AEC, CNG, PLC, AGC, AJB

Telephony Features

• Hold, transfer, forward, 5-way conference, call park, call pickup, shared-call appearance(SCA)/bridged-line-appearance(BLA), downloadable phonebook (XML, LDAP, up to 2000 items), call waiting, call log (up to 800 records), 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

HD Audio

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

Base Stand

• Yes, 2 angle positions available (39° & 45°), Wall Mountable (*wall mount sold separately)

QoS

• Layer 2 QoS (802.1Q, 802.1P) and Layer 3 (ToS, DiffServ, MPLS) QoS

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

Multi-language

• English, Chinese, Korean, Japanese, German, Italian, French, Spanish, Portuguese, Russian, Croatian, and more

Upgrade/Provisioning

• Firmware upgrade via FTP/TFTP / HTTP / HTTPS, mass provisioning using GDMS/TR069 or AES encrypted XML configuration file

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

Package Content

• GRP2604P phone, handset with cord, base stand, universal power supply (GRP2604P only), network cable, Quick Installation Guide, BLF Lables

Physical

• Dimension: 214mm (L) x 206mm (W) x 68mm (H) (with handset)
• Unit weight: 790g;
• Package weight: 1100g for GRP2604P