The Grandstream GRP2603 is a 3-line, 6-SIP account essential IP phone designed for mass deployment and easy management. It offers a suite of next-generation features suitable for small to medium businesses, remote workers, and service providers.
📞 Key Specifications
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Lines & SIP Accounts: Supports 3 lines and up to 6 SIP accounts.
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Display: 2.48-inch (132 x 64 px) backlit graphical LCD.
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Audio Features:
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Full-duplex speakerphone with HD audio.
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5-way voice conferencing to maximize productivity.
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Noise Shield technology and AI noise reduction to minimize background noise.
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Network Interfaces:
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Dual 10/100 Mbps Ethernet ports.
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Integrated Power over Ethernet (PoE) available in GRP2603P model.
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Headset Support:
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RJ9 headset port with Electronic Hook Switch (EHS) support for Plantronics, Jabra, and Sennheiser headsets.
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Security Features:
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Secure boot, dual firmware images, and encrypted data storage for enterprise-level protection.
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Provisioning & Management:
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Zero-touch provisioning for mass deployment.
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Supported by Grandstream’s Device Management System (GDMS) for centralized configuration and monitoring.
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Physical Features:
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Four programmable context-sensitive soft keys.
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Wall-mountable with optional GRP_WM_A bracket.
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45° angle base stand.
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Audio Codecs Supported:
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G.711μ/a, G.722 (wideband), G.726, G.729A/B, G.723, iLBC, Opus.
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📦 Package Contents
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GRP2603 IP Phone.
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Handset with cord.
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Base stand.
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Ethernet cable.
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Quick Installation Guide.
