The Grandstream GRP2604 is a model in the GRP series of IP phones, designed to provide essential features with an emphasis on functionality and ease of use. This phone is suitable for businesses that require reliable communication tools with straightforward management and installation. Here’s a comprehensive overview of the Grandstream GRP2604:

Key Features:

1. Display and Interface:

   • Screen: 2.4-inch color LCD display with a resolution of 320x240 pixels. This display offers clear, vibrant visuals for easy navigation of menus, viewing call details, and managing contacts.
   • Buttons: Features 4 programmable line keys with LED indicators. These keys can be customized for various functions such as line appearances, speed dial, and Busy Lamp Field (BLF) monitoring.

2. Audio Quality:

   • Codecs: Supports high-definition (HD) voice with the G.722 codec, in addition to standard codecs like G.711, G.729, and G.726. This ensures high-quality audio for clear communication.
   • Speaker and Microphone: Full-duplex speakerphone with a high-quality microphone for effective hands-free communication.

3. Connectivity:

   • Network Ports: Two 10/100 Mbps Ethernet ports – one for connecting the phone to the network and one for connecting a PC. This provides reliable network performance and allows for flexibility in network setup.
   • Power over Ethernet (PoE): Supports PoE (IEEE 802.3af), allowing the phone to be powered through the Ethernet cable. This reduces the need for separate power adapters and simplifies installation.

4. Call Management:

   • Features: Offers essential call management functionalities such as call hold, call transfer, call forward, and call waiting.
   • Directories: Includes local directories and call history, making it easy to access and manage contacts and recent calls.

5. SIP Support:

   • SIP Accounts: Supports up to 4 SIP accounts, allowing users to manage multiple lines or extensions.
   • SIP Protocols: Compatible with standard SIP protocols, ensuring broad interoperability with various VoIP services and systems.

6. User Interface:

   • Menu: Features an intuitive menu system for straightforward setup and daily use.
   • Languages: Supports multiple languages, making it adaptable for different regions and user preferences.

7. Additional Features:

   • Firmware: Firmware is upgradeable, enabling the addition of new features and improvements over time.
   • Wall Mountable: The phone can be mounted on a wall if needed, providing flexible installation options.