The Grandstream GRP2604P is a 3-line essential IP phone in the GRP2600 series, offering a balance of functionality, ease of use, and affordability. This model is designed to provide businesses with reliable communication tools and includes Power over Ethernet (PoE) support for simplified installation. Here’s a detailed overview of the Grandstream GRP2604P:

Key Features:

1. Display and Interface:

   • Screen: 2.4-inch color LCD display with a resolution of 320x240 pixels, providing clear and vibrant visuals for navigating menus, viewing call information, and managing contacts.
   • Buttons: Equipped with 3 programmable line keys with LED indicators. These keys can be configured 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, along with 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 configuration ensures reliable network performance and provides flexibility in network setup.
   • Power over Ethernet (PoE): Supports PoE (IEEE 802.3af), allowing the phone to be powered through the Ethernet cable. This feature simplifies installation by reducing the need for a separate power adapter and minimizing cable clutter.

4. Call Management:

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

5. SIP Support:

   • SIP Accounts: Supports up to 3 SIP accounts, allowing users to manage up to three 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 that simplifies setup and daily operation.
   • Languages: Supports multiple languages, making it adaptable for use in different regions and user environments.

7. Additional Features:

   • Firmware: Firmware is upgradeable, allowing for future updates and feature enhancements.
   • Wall Mountable: Can be mounted on a wall if needed, offering flexible installation options.