GRANDSTREAM GRP2604P PROFESSIONAL IP PHONE 3 LINES 6 SIP ACCOUNTS GIGABIT POE HD AUDIO

Overview

The Grandstream GRP2604P Professional IP Phone is a reliable 3-line business phone designed for professional communication, easy deployment, and efficient day-to-day call management. With support for 6 SIP accounts, Gigabit Ethernet, integrated PoE, HD audio, and advanced noise reduction, it provides a practical voice solution for offices, businesses, remote workers, and high-volume deployments.

Part of Grandstream’s GRP series of essential IP phones, the GRP2604P combines professional calling features with centralized device management through Grandstream Device Management System (GDMS). Its dual Gigabit Ethernet ports, HD full-duplex speakerphone, 5-way audio conferencing, EHS headset support, and enterprise-level security make it suitable for demanding business communication environments.

Quick Specs

• Model: Grandstream GRP2604P
• Phone Type: Professional 3-Line IP Phone
• Lines: 3 lines
• SIP Accounts: 6 SIP accounts
• Call Appearances: Up to 3
• Network: Dual switched 10/100/1000 Mbps Gigabit Ethernet ports
• PoE: Integrated Power over Ethernet
• Audio: Full-duplex speakerphone with HD audio
• Noise Reduction: Noise Shield technology and AI noise reduction
• Conferencing: 5-way audio conferencing
• Display: 2.7-inch 132 × 64 backlit graphical LCD
• Headset Support: EHS support for compatible Plantronics, Jabra, and Sennheiser headsets
• Device Management: Grandstream Device Management System (GDMS)
• Wi-Fi: No
• Security: Secure boot, dual firmware images, and encrypted data storage
• Ideal For: Offices, businesses, remote workers, service providers, and professional deployments

Why Buy

• Professional 3-line calling: Manage multiple business calls efficiently with 3 lines and support for up to 6 SIP accounts.
• Gigabit connectivity: Dual 10/100/1000 Mbps Ethernet ports provide fast and flexible network connectivity.
• Integrated PoE: Power the GRP2604P through a compatible Ethernet connection, helping simplify desktop installation.
• Clear HD communication: Full-duplex HD audio helps deliver clearer conversations through the handset and speakerphone.
• Reduced background noise: Noise Shield technology and AI noise reduction help minimise unwanted background sounds.
• Conference calling: Built-in 5-way audio conferencing makes group calls easier to manage.
• Centralised management: GDMS provides a centralised platform for configuring, provisioning, managing, and monitoring compatible Grandstream devices.
• Business-grade security: Enterprise-level protection features help secure the phone and its stored data.

Insights

For businesses that handle several calls throughout the day, having multiple SIP accounts and dedicated line support can make communication easier to organise. The GRP2604P supports 3 lines and 6 SIP accounts, allowing it to accommodate multiple business communication requirements from a single desktop handset.

Network flexibility is another important advantage. The phone provides dual switched 10/100/1000 Mbps Gigabit Ethernet ports, while the GRP2604P version includes integrated PoE. This can help simplify deployment where compatible network infrastructure is already available.

Audio quality is equally important in professional calls. The GRP2604P combines a full-duplex HD speakerphone with noise reduction features designed to minimise background noise, helping users maintain clearer conversations in busy office environments.

Key Features

3 Lines and 6 SIP Accounts

The GRP2604P supports 3 lines, 6 SIP accounts, and up to 3 call appearances, making it suitable for users who need to manage multiple business calling services or accounts from one professional IP phone.

Gigabit Ethernet Connectivity

Dual switched auto-sensing 10/100/1000 Mbps Gigabit Ethernet ports provide fast network connectivity and flexible installation options for professional office networks.

Integrated PoE

The GRP2604P includes integrated Power over Ethernet, allowing compatible network infrastructure to provide both network connectivity and power through the Ethernet connection. This can help reduce cable clutter and simplify installation.

HD Full-Duplex Audio

The full-duplex speakerphone provides HD audio to help maximise voice clarity during calls. The phone is designed to provide clear communication through both the speakerphone and handset.

Noise Shield and AI Noise Reduction

Noise Shield technology and AI noise reduction help minimise background noise, making the phone better suited to busy offices and other environments where unwanted sounds may affect conversations.

5-Way Audio Conferencing

Built-in 5-way audio conferencing allows users to bring multiple participants into a conference call without requiring separate conferencing equipment.

GDMS Device Management

The GRP2604P is supported by Grandstream Device Management System (GDMS), which provides a centralised interface for configuring, provisioning, managing, and monitoring compatible Grandstream devices.

EHS Headset Support

Electronic Hook Switch support is available for compatible Plantronics, Jabra, and Sennheiser headsets, providing greater flexibility for professional users who prefer headset-based calling.

Professional Display

The phone features a 2.7-inch 132 × 64 backlit graphical LCD for viewing calling information and navigating the device interface.

Enterprise-Level Security

Security features include secure boot, dual firmware images, and encrypted data storage, providing additional protection for professional deployments.

Swappable Faceplate

The GRP2604P includes a swappable faceplate, allowing businesses to customise the device’s logo area for branding purposes.

Use Cases

• Business Offices: Handle everyday business calls with 3 lines and support for 6 SIP accounts.
• Reception and Administration: Manage multiple calling accounts and conference conversations from a dedicated desk phone.
• Remote Workers: Provide professional IP telephony functionality for compatible remote-office deployments.
• Small and Medium Businesses: Deploy a feature-rich IP phone with Gigabit networking and integrated PoE.
• Call-Heavy Workstations: Multiple lines, HD audio, headset support, and conferencing make the phone suitable for users who regularly handle calls.
• Enterprise Deployments: GDMS support can simplify centralised provisioning and device management across compatible deployments.
• Conference Calling: Use the built-in 5-way audio conferencing capability for group business conversations.

Is It Right?

This IP phone is a great choice if you:

• Need a professional 3-line IP phone for business communication.
• Require support for multiple SIP accounts.
• Want up to 6 SIP accounts on one phone.
• Need Gigabit Ethernet connectivity.
• Want integrated PoE for a cleaner installation.
• Value HD audio and full-duplex speakerphone performance.
• Need built-in conference calling.
• Want headset support through compatible EHS devices.
• Need centralised device management through GDMS.
• Want professional security features for business deployment.

You may want to consider another option if you:

• Require built-in Wi-Fi connectivity.
• Need more than 3 lines or 6 SIP accounts on a single handset.
• Require advanced features found on higher-end professional IP phone models.
• Do not have a compatible Ethernet network or PoE infrastructure and prefer a wireless phone.

Specifications

Compatibility

• SIP Platforms: Designed for IP telephony environments using SIP-based communication.
• Network Infrastructure: Compatible with 10/100/1000 Mbps Ethernet networks.
• PoE Networks: The GRP2604P supports integrated PoE for compatible Ethernet infrastructure.
• Headsets: Supports EHS functionality with compatible Plantronics, Jabra, and Sennheiser headsets.
• Device Management: Compatible with Grandstream Device Management System (GDMS) for supported management and provisioning functions.

Setup

1. Position the phone in a suitable location with access to the required network connection.
2. Connect the Ethernet cable to a compatible network port.
3. Use PoE through compatible network infrastructure to power the GRP2604P, or use the appropriate power arrangement where required.
4. Connect the phone to the network and allow it to obtain the required network configuration.
5. Configure the SIP accounts according to your VoIP provider, PBX, or business telephony system.
6. Configure device management through GDMS where applicable.
7. Connect a compatible headset if headset-based calling is required.
8. Make a test call to confirm registration, audio quality, and network connectivity.

FAQs