A model of the GRP Series of Carrier Grade IP Phones, the GRP2603 is an essential 3-line model designed with zero-touch provisioning for mass deployment and easy management.

It has an elegant design and next-generation features, including: 5-way audio conferencing to maximize productivity, integrated PoE (GRP2603P), full HD audio on both speaker and handset so users can communicate with maximum clarity, EHS support for Plantronics, Jabra and Sennheiser headsets and multilingual support.

The GRP series includes carrier-grade security solutions for enterprise-grade security, including secure boot, dual firmware images, and encrypted data storage.

For cloud-based provisioning and centralized management, the GRP2603 is supported by Grandstream's Device Management System (GDMS), which provides a centralized interface for configuring, provisioning, managing and monitoring Grandstream endpoints.

Designed to meet the needs of on-site or remote desktop workers, the GRP2603 offers an easy-to-use and easy-to-deploy audio endpoint for enterprises, service providers and other high-volume markets.

- 6 SIP accounts, 3 lines
- GDMS support that provides a centralized interface to configure, provision, manage and monitor Grandstream devices
- Electronic Hook Switch (EHS) support for Plantronics, Jabra and Sennheiser headsets
- Full-duplex speakerphone with HD audio to maximize sound quality and intelligibility
- Equipped with noise protection technology to minimize background noise
- Dual-switch auto-sensing 10/100/1000 Mbps Gigabit Ethernet ports with integrated PoE (GRP2603P only)
- Supports five-way audio conferencing for simple conference calls
- Enterprise-grade protection including secure boot, dual firmware images and encrypted data storage
- Interchangeable faceplate for easy logo customization