Grandstream GRP2604P 3-line Essential IP Phone

Grandstream GRP2604P 3-Line Essential IP Phone is a carrier-grade VoIP desk phone designed for businesses, service providers, and enterprise environments that require reliable communication, simplified deployment, and centralized management. Featuring 3 lines, support for up to 6 SIP accounts, integrated Power over Ethernet (PoE), HD audio, and 5-way audio conferencing, the GRP2604P delivers professional-grade voice communications while reducing deployment complexity. Supported by Grandstream Device Management System (GDMS), it is an ideal solution for organizations seeking scalable and secure IP telephony.

Product Features

Integrated Power over Ethernet (PoE)

The GRP2604P features built-in IEEE 802.3af Power over Ethernet support, allowing both power and network connectivity through a single Ethernet cable. This simplifies installation, reduces cable clutter, and lowers infrastructure costs.

Support for 3 Lines and 6 SIP Accounts

Designed for busy professionals and multi-department environments, the GRP2604P supports 3 lines and up to 6 SIP accounts, enabling efficient handling of multiple calls and extensions from a single device.

HD Audio with Noise Shield Technology

The phone delivers crystal-clear HD voice quality on both the handset and full-duplex speakerphone. Noise Shield technology and AI-based noise reduction help minimize background distractions, ensuring professional call quality in any workspace.

5-Way Audio Conferencing

Built-in 5-way audio conferencing allows teams to collaborate directly from the phone without requiring external conferencing platforms, improving productivity and communication efficiency.

Dual Gigabit Ethernet Ports

The GRP2604P includes dual switched 10/100/1000 Mbps Gigabit Ethernet ports, providing high-speed network connectivity and supporting modern business communication infrastructures.

Centralized Management with GDMS

Grandstream Device Management System (GDMS) provides centralized provisioning, monitoring, troubleshooting, and firmware management. This enables zero-touch deployment and simplified administration across large device deployments.

Enterprise-Grade Security

The GRP2604P incorporates advanced security features including secure boot, encrypted data storage, dual firmware images, TLS, and SRTP support to help protect communications and network access.

Professional Headset Compatibility

An RJ9 headset port with Electronic Hook Switch (EHS) support allows integration with compatible wireless headsets from leading manufacturers, improving user mobility and productivity.

Customizable Faceplate Design

The phone supports swappable faceplates, allowing organizations and service providers to customize branding for a professional and consistent corporate appearance.

Product Specifications

• Model: Grandstream GRP2604P
• Product Type: Carrier-Grade Essential IP Phone
• Lines: 3 lines
• SIP Accounts: Up to 6 SIP accounts
• Call Appearances: Up to 3 simultaneous call appearances
• Display Type: Backlit graphical LCD
• Display Size: 2.7-inch
• Display Resolution: 132 × 64 pixels
• Audio Quality: HD handset and HD speakerphone audio
• Speakerphone: Full-duplex speakerphone
• Conferencing: 5-way audio conferencing
• Noise Reduction: Noise Shield technology with AI noise reduction
• Network Ports: Dual 10/100/1000 Mbps Gigabit Ethernet ports
• PoE Support: Integrated IEEE 802.3af PoE
• Headset Port: RJ9 headset jack
• EHS Support: Yes
• Voice Codecs: Opus, G.722, G.711 A-law/U-law, G.729A/B, G.726, G.723, iLBC
• Device Management: Grandstream Device Management System (GDMS)
• Provisioning: Zero-touch provisioning, TR-069, XML configuration files
• Security Features: Secure boot, encrypted data storage, dual firmware images, TLS, SRTP, HTTPS, 802.1X authentication
• Phonebook Capacity: Up to 2,000 contacts
• Call Log Capacity: Up to 800 records
• QoS Support: 802.1Q, 802.1P, DiffServ
• IPv6 Support: Yes
• Wall Mountable: Yes
• Custom Branding: Swappable faceplate support
• Power Supply: PoE or optional external power adapter
• Ideal Use Cases: Small businesses, enterprise offices, call centers, reception desks, service providers, and large-scale VoIP deployments.