Grandstream GRP2604P 3-line Essential IP Phone

The Grandstream GRP2604P is a 3-line essential IP phone designed for high-volume enterprise and service provider deployments. It features zero-touch provisioning for easy setup, integrated PoE for simplified connectivity, and advanced telephony tools including 5-way audio conferencing. With full HD audio on both the handset and speaker, support for popular headsets via EHS, and a sleek design with customizable branding, the GRP2604P delivers reliable communication at an excellent value.

Product Features

3-line support with up to 6 SIP accounts
Handle multiple calls efficiently with support for 3 lines and 6 SIP accounts, ideal for office professionals and remote workers.

Integrated PoE and Gigabit ports
Dual auto-sensing 10/100/1000 Mbps Ethernet ports with PoE for streamlined deployment and reduced cable clutter.

HD audio and advanced noise shielding
Equipped with full-duplex HD audio on the handset and speakerphone, plus built-in noise shield technology to suppress background noise.

5-way conferencing and 10 BLF keys
Host seamless conference calls and manage extensions with up to 5-way conferencing and 10 programmable BLF keys.

Enterprise-grade security features
Secure boot, dual firmware images, encrypted configuration, SRTP/TLS support, and 802.1x media access control.

GDMS cloud provisioning
Compatible with Grandstream’s Device Management System for remote provisioning, monitoring, and centralized device control.

Swappable faceplate for branding
Easily replaceable front panel allows for custom logo printing for brand consistency in deployments.

Product Specifications

• Display: 2.48-inch backlit graphical LCD (132 x 64 resolution)
• SIP accounts: 6
• Lines: 3 with dual-color LED line keys
• BLF keys: 10 programmable keys
• Feature keys:
  • 4 XML programmable softkeys
  • 5 navigation/menu keys
  • 8 dedicated function keys: MESSAGE (with LED), TRANSFER, HEADSET, MUTE, SEND/REDIAL, SPEAKERPHONE, VOL+, VOL–
• Audio codecs supported: G.729A/B, G.711µ/a-law, G.726, G.722 (wideband), G.723, iLBC, Opus
• Audio enhancements: VAD, AEC, CNG, PLC, AGC
• Telephony features:
  • Hold, transfer, forward
  • 5-way audio conferencing
  • Call park, call pickup
  • SCA/BLA support
  • XML/LDAP phonebook (up to 2000 entries)
  • Call log (up to 800 records)
  • Off-hook auto dial, auto answer
  • Click-to-dial, flexible dial plan, hot-desking
  • Custom music ringtones, music on hold
  • Server redundancy and failover
• Network interfaces: Dual Gigabit ports with PoE (IEEE802.3af Class 2)
• Auxiliary port: RJ9 headset jack with EHS support for Plantronics, Jabra, and Sennheiser headsets
• QoS support: 802.1Q, 802.1P, ToS, DiffServ, MPLS
• Security:
  • User/admin password access
  • 256-bit AES encrypted configuration
  • MD5/MD5-sess authentication
  • Secure boot, SRTP, TLS, 802.1x
• Provisioning & upgrade: FTP/TFTP/HTTP/HTTPS, TR-069, GDMS, AES encrypted XML
• Languages supported: English, Chinese, Korean, Japanese, German, Italian, French, Spanish, Portuguese, Russian, Croatian, and more
• Power:
  • Adapter: Input 100–240VAC, Output +5VDC, 600mA
  • PoE: 3.84W–6.49W, IEEE802.3az (EEE) support
• Operating environment:
  • Temperature: 0°C to 40°C (operation), -10°C to 60°C (storage)
  • Humidity: 10% to 90% non-condensing
• Base stand: 2-position (39° & 45°), wall-mountable (bracket sold separately)
• Physical dimensions: 214mm (L) x 206mm (W) x 68mm (H) (with handset)
• Weight: 790g (unit), 1100g (package)
• Package contents: GRP2604P phone, handset with cord, base stand, network cable, Quick Installation Guide, BLF labels