Grandstream GRP2603 3-Line Display IP Phone
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Professional IP Phone for Modern Business Communications
The Grandstream GRP2603 is a reliable 3-line IP phone designed to deliver crystal-clear voice communications for small to medium-sized businesses. With its intuitive interface, HD audio quality, and robust feature set, this phone provides the essential tools needed for efficient daily communications.
Key Features and Benefits
- Multiple Line Support: Manage up to 6 SIP accounts with 3 dedicated line keys featuring dual-color LED indicators for easy call monitoring
- Crystal Clear Audio: HD handset and speakerphone with wideband audio support, enhanced by noise shield technology to minimize background noise
- Versatile Conferencing: Built-in 5-way audio conferencing capability for collaborative team discussions
- Clear Visual Display: 2.48 inch (132 x 64) backlit graphical LCD display for easy navigation and call information
- Gigabit Connectivity: Dual switched auto-sensing 10/100/1000 Mbps Ethernet ports for high-speed network performance
- Headset Compatible: RJ9 headset jack with EHS support for Plantronics, Jabra, and Sennheiser headsets
- Enterprise-Grade Security: Carrier-grade security features including secure boot, dual firmware images, and encrypted data storage
- Easy Deployment: Zero-touch provisioning via Grandstream's Device Management system for simplified setup
- Customizable Design: Swappable faceplate allows for easy logo customization to match your brand
Ideal for Business Environments
The GRP2603 is well-suited for professionals who require reliable, high-quality voice communications without unnecessary complexity. Whether you're managing a reception desk, equipping individual offices, or outfitting a call center, this phone delivers the functionality businesses need. The combination of multiple line support and HD audio ensures that users can handle busy call volumes while maintaining clear, professional conversations. The noise shield technology is particularly valuable in open office environments where background noise can be a concern. Additionally, the phone's compatibility with popular headset brands provides flexibility for users who prefer hands-free operation throughout their workday.
Technical Specifications
- Manufacturer: Grandstream
- Model: GRP2603
- Display: 2.48 inch (132 x 64) backlit graphical LCD
- SIP Accounts: 6
- Line Keys: 3 with dual-color LED
- Audio Conferencing: 5-way
- Network: Dual Gigabit Ethernet ports (10/100/1000 Mbps)
- Audio: HD handset and speakerphone with wideband audio support
- Headset Port: RJ9 with EHS support
- Wi-Fi: No
- Bluetooth: No
What's Included
- 1x GRP2603 phone
- 1x handset with cord
- 1x base stand
- 1x universal power supply
- 1x network cable
- 1x Quick Installation Guide
Note: Optional accessories such as wall mount kits, additional headsets, and PoE injectors are available separately.
Why Buy from PC Liquidations
When you choose this Grandstream GRP2603, you're getting more than just a business phone—you're investing in reliable communications backed by a company with over 30 years of industry knowledge. Every unit is thoroughly tested and refurbished by A+ certified technicians who ensure it meets strict quality standards before it reaches your door. We stand behind our products with comprehensive warranties and a commitment to your satisfaction, making it easy to upgrade your business communications with confidence.

New Product
These products are brand new and have never been used. They arrive in the original manufacturer packaging in pristine, factory-fresh condition.
GRP2603 3-Line Display IP Technical Specs
| Manufacturer | Grandstream |
|---|---|
| Model | GRP2603 |
| Display Dims and Resolution | 2.48 inch (132 x 64) backlit graphical LCD display |
| Audio Conferencing | 5-way audio conferencing |
| SIP Accounts | 6 SIP accounts |
| Number of Line Keys | 3 line keys with dual-color LED |
| Network Interfaces | Dual switched auto-sensing 10/100/1000 Mbps Ethernet ports |
| HD Audio | Yes, HD handset and speakerphone with support for wideband audio |
| Built-In Wi-Fi | No |
| Bluetooth | No |
| Auxiliary Ports | RJ9 headset jack (allowing EHS with Plantronics, Jabra, and Sennheiser headsets) |
| OS | - |
| Speakerphone | Yes, HD speakerphone |
| Special Feature(s) | Noise shield technology to minimize background noise,; carrier-grade security (secure boot, dual firmware images, and encrypted data storage),,,; swappable faceplate for easy logo customization; and zero-touch provisioning via Grandstream’s Device Manag |
| Optional Accessories (sold separately) | Wall Mount Kit Headsets (Wired & EHS Headsets) Universal 5V Power Adapter PoE Injector |
| Included | 1x GRP2603 phone 1x handset with cord 1x base stand 1x universal power supply 1x network cable 1x Quick Installation Guide |
No-hassle returns. Zero restocking fees.
Wrong item? Changed your mind? Don't need it anymore? We've got you covered.
30-Day Returns
- No restocking fees, ever
- Refund or store credit — your choice
- 30 days from invoice date
- Return in original condition, securely packed
Fast Shipping
- Ships within 2 business days*
- Rush & Saturday delivery available — call us
- Free ground shipping available (continental US orders over $500)
- Overnight delivery available
1-Year Warranty
- Covers defects & functional failures
- Normal business use, from date of purchase
- Batteries: 90 days (consumable)
- Excludes misuse, modification, mishandling
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*Shipping and delivery on business days. Purchaser is responsible for return shipping costs and insurance. Free/fixed shipping offers exclude palletized items — call for freight rates.




























































