
Grandstream 3-Line Carrier Desk Phone Supports PoE
3-line IP desk phone with PoE, Gigabit ports, HD audio, and centralized management for business communication.
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The Grandstream GRP2603P is a 3-line carrier-grade IP desk phone designed for business environments and service provider deployments, offering reliable communication and efficient multi-line call handling.
It supports 3 lines and up to 6 SIP accounts, making it ideal for receptionists, administrative staff, and users who manage multiple calls daily.
The device features dual Gigabit Ethernet ports, ensuring fast and stable network connectivity while allowing a PC to share the same connection without performance loss.
With built-in Power over Ethernet (PoE), the phone can be powered and connected using a single Ethernet cable, simplifying installation and reducing cable clutter.
It delivers HD audio on both handset and full-duplex speakerphone, providing clear and professional voice quality for business communication.
As part of the GRP series, it supports centralized management via GDMS, along with enterprise-grade security features such as encrypted provisioning and secure boot, making it suitable for large-scale deployments.
Key Features
- 3 lines with up to 6 SIP accounts
- Dual Gigabit Ethernet ports
- Built-in PoE (802.3af)
- HD audio (handset & speakerphone)
- 132x48 backlit LCD display
- 5-way audio conferencing
- Centralized management via GDMS
- EHS headset support
- Secure provisioning with TLS/SRTP
- Carrier-grade design for business use


