Grandstream GRP2603 Essential HD IP Phone

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

• Lines & SIP Accounts: Supports 3 lines and up to 6 SIP accounts. ​

• Display: 2.48-inch (132 x 64 px) backlit graphical LCD.

• Audio Features:

  • Full-duplex speakerphone with HD audio.

  • 5-way voice conferencing to maximize productivity.

  • Noise Shield technology and AI noise reduction to minimize background noise.

• Network Interfaces:

  • Dual 10/100 Mbps Ethernet ports.

  • Integrated Power over Ethernet (PoE) available in GRP2603P model. ​

• Headset Support:

  • RJ9 headset port with Electronic Hook Switch (EHS) support for Plantronics, Jabra, and Sennheiser headsets. ​

• Security Features:

  • Secure boot, dual firmware images, and encrypted data storage for enterprise-level protection. ​

• Provisioning & Management:

  • Zero-touch provisioning for mass deployment.

  • Supported by Grandstream’s Device Management System (GDMS) for centralized configuration and monitoring. ​

• Physical Features:

  • Four programmable context-sensitive soft keys.

  • Wall-mountable with optional GRP_WM_A bracket.

  • 45° angle base stand. ​

• Audio Codecs Supported:

  • G.711μ/a, G.722 (wideband), G.726, G.729A/B, G.723, iLBC, Opus. ​

📦 Package Contents

• GRP2603 IP Phone.

• Handset with cord.

• Base stand.

• Ethernet cable.

• Quick Installation Guide.​

x

    Select Certificate

OK Cancel

Signer.Digital x

   Signer.Digital – Confirm Key Listing / Usage

Current Domain
is trying to detect smartcards connected, or read certificate or use key for signing/encryption. Please select your option.

Deny Always Allow

Licensed Sites

Website	License Status	Features	Action