Grandstream GRP2604 Gigabit IP Phone
3-Line Carrier-Grade IP Phone with PoE & Gigabit Speed

Buy GRP2604P (Gigabit+PoE)
Maximize your office productivity with the 3-Line GRP2604P. Features 1000Mbps Gigabit ports for blazing fast computer connectivity.
Why Choose the GRP2604 Series?
Gigabit Ports
Dual 10/100/1000 Mbps ports for high-speed network pass-through
SIP Lines
Manage up to 3 separate lines and 6 SIP accounts effortlessly
Audio Quality
Crystal-clear conversations with full-duplex speakerphone
Power over Ethernet
Power the device directly via LAN cable (GRP2604P model)
Premium Features That Set the GRP2604 Apart
Gigabit Speed
The GRP2604 is built for speed. Its dual Gigabit network ports ensure your computer receives maximum internet bandwidth when bridged through the phone.
HD Audio Excellence
Experience superior call quality with wideband HD audio, acoustic echo cancellation, and full-duplex speakerphone for natural, professional conversations.
6 SIP Accounts
Handle more volume with support for up to 3 lines and 6 SIP accounts, perfect for receptionists and busy sales staff.
Backlit LCD Display
The 132x64 backlit graphical LCD provides clear visibility of caller information, call status, and menu navigation.
Enterprise Security
Built with advanced security features including secure boot, encrypted data storage, TLS/SRTP support, and 802.1x authentication.
Integrated PoE
The GRP2604P model includes built-in PoE to power the device and give it a network connection, reducing cable clutter.
Grandstream GRP2604: The Essential Gigabit IP Phone
The Grandstream GRP2604P is a 3-line carrier-grade IP phone 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.
Why Gigabit Matters?
In modern offices, computers are often connected to the network through the IP phone on the desk. Standard phones limit your computer's speed to 100Mbps. The GRP2604P features Gigabit ports (1000Mbps), ensuring your PC gets the full speed of your fiber internet connection without any bottleneck.

Comprehensive Business Features
The GRP2604 Series is packed with productivity-focused telephony features:
- 3 Lines, 6 SIP Accounts โ Ideal for moderate to high call volumes
- Gigabit Network Ports โ Fast data passthrough for PCs
- 5-way Voice Conferencing โ For easy team collaboration
- Swappable Faceplate โ For easy logo customization
- Phonebook โ Up to 2,000 contacts with search
- Busy Lamp Field (BLF) โ Monitor status of other extensions
- Electronic Hook Switch (EHS) โ Support for headsets (Plantronics, Jabra, Sennheiser)
Technical Specifications
| Specification | Details |
|---|---|
| Network Connection | Dual Switched Auto-Sensing 10/100/1000 Mbps Gigabit Ethernet Ports |
| SIP Accounts | 3 lines, 6 SIP accounts |
| Display | 132 x 64 backlit graphical LCD |
| Audio Codecs | G.711 (a/ฮผ), G.722 (HD), G.726, G.729A/B, Opus, iLBC |
| Power | GRP2604P: Integrated PoE (802.3af) Universal Power Adapter included in box for non-PoE setups |
| Soft Keys | 4 XML programmable context-sensitive keys |
| Conferencing | 5-way audio conferencing |
Ideal for High-Volume Environments
With support for 3 lines and Gigabit speed, the GRP2604P is perfect for desktop users who need efficient call handling and fast data access. It is the go-to choice for sales teams, support staff, and general office workers.
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Experience the speed of Gigabit VoIP. Order the GRP2604P online from TekkPak Technologies and enjoy hassle-free delivery.
Frequently Asked Questions About GRP2604
What is the difference between GRP2602 and GRP2604?
The GRP2604 is a more advanced model. While the GRP2602 supports 2 lines and 10/100 Mbps ports, the GRP2604 supports 3 lines (6 SIP accounts) and features Gigabit (10/100/1000 Mbps) ports for higher speed data pass-through.
Does the GRP2604P support Power over Ethernet (PoE)?
Yes, the GRP2604P model supports integrated PoE (802.3af), allowing you to power the device and provide data connectivity through a single Ethernet cable. A power adapter is not required if using a PoE switch.
How many SIP accounts does the GRP2604 support?
The GRP2604 series supports up to 3 Lines and 6 SIP Accounts, making it ideal for employees who handle moderate to high call volumes.
Does the GRP2604 support Gigabit speeds?
Yes, the GRP2604 comes with dual-switched auto-sensing 10/100/1000 Mbps Gigabit Ethernet ports, ensuring your computer's internet speed is not bottled-necked by the phone.
Is the GRP2604 compatible with Grandstream UCM PBX?
Yes, it is fully compatible with Grandstream UCM6300 series PBX and supports Zero-Touch Provisioning via GDMS (Grandstream Device Management System).
Transform Your Business Communication Today
Experience the difference that professional-grade IP telephony can make. The TekkPak Technologies team is ready to help you deploy the perfect communication solution.
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