Grandstream GXP1625 IP Phone

1. Introduction

This user manual provides comprehensive instructions for the Grandstream GXP1625 IP Phone, a reliable and user-friendly device designed for basic to medium business communication needs. It features a 132x48 pixel backlit graphical LCD display, support for 2 SIP accounts, and HD wideband audio for clear calls. This guide covers setup, operation, maintenance, and troubleshooting to ensure optimal performance of your device.

2. Package Contents

Verify that all items are present in your package:

• GXP1625 phone unit
• Handset with cord
• Base stand
• Universal power supply
• Network cable
• Quick Installation Guide
• Brochure
• GPL License

3. Physical Overview

The Grandstream GXP1625 IP Phone features a sleek black design with a clear LCD display and an intuitive keypad. Below is an image of the phone for reference.

Figure 3.1: Front view of the Grandstream GXP1625 IP Phone, showing the handset, display, and keypad.

4. Setup

To set up your Grandstream GXP1625 IP Phone, follow these basic steps:

1. Attach the Base Stand: Securely attach the base stand to the bottom of the phone unit.
2. Connect the Handset: Plug one end of the coiled handset cord into the handset and the other end into the handset port on the phone.
3. Connect to Network: Connect one end of the provided Ethernet cable to the LAN port on the phone and the other end to an available Ethernet port on your network switch or router. If using Power over Ethernet (PoE), the phone will power on automatically.
4. Connect Power (if not using PoE): If your network does not support PoE, connect the universal power supply to the power port on the phone and then plug it into a power outlet.
5. Initial Boot-up: The phone will power on and begin its boot-up sequence. The display will show the Grandstream logo and then proceed to the main idle screen.

For detailed network configuration and SIP account setup, please refer to the comprehensive User Guide (PDF) available for download from the manufacturer's website or the provided link in the product documentation.

5. Operating Instructions

This section details the common operations of your Grandstream GXP1625 IP Phone. For a visual guide, please refer to the official product video below, which demonstrates many of these functions.

5.1. Using Headset and Speaker

The GXP1625 supports both headset and speakerphone modes for hands-free communication.

• Speakerphone: To turn the speakerphone on or off, press the Speaker button (located near the bottom right of the keypad).
• Headset: If a headset is connected to the phone's headset port, press the Headset button (located near the bottom right of the keypad, next to the speaker button) to activate or deactivate headset mode.

5.2. Making a Call

There are three primary ways to initiate a call:

• Handset/Headset: Lift the handset or activate headset mode. The phone will provide a dial tone.
• Speakerphone: Press the Speaker button. The phone will provide a dial tone.
• Line Key Selection: Press an available Line Key (the dual-color buttons next to the display). The corresponding line key will turn green, and you will hear a dial tone.

Once you have a dial tone, enter the desired phone number using the keypad. Press the Send button (green phone icon) or the # key to dial the number.

5.3. Redialing

To redial the last number called:

1. Lift the handset or activate speakerphone/headset mode.
2. Press the Send button (green phone icon) or the Redial soft key on the phone's display. The phone will redial using the same SIP account as the previous call.

5.4. Answering Calls

When an incoming call is received, the phone will ring, and the corresponding line key will flash red.

• Single Incoming Call: Lift the handset, press the Speaker button, or press the flashing red Line Key to answer the call.
• Multiple Incoming Calls (Call Waiting): If you are on an active call and another call comes in, you will hear a call waiting tone. Press the flashing red Line Key of the new incoming call to answer it. Your current call will automatically be put on hold. You can toggle between calls by pressing the respective line keys.

5.5. Ending a Call

To end an active call:

• If using the handset, simply place the handset back on the cradle.
• If using speakerphone or headset, press the End Call soft key on the display or press the Speaker or Headset button again.

5.6. Hold and Resume

To place an active call on hold, press the Hold button (pause icon). The line key will flash green. To resume a call that is on hold, press the blinking green Line Key.

5.7. Volume Adjustment and Mute

You can adjust the volume for both the ringer and active calls, and mute your microphone.

• Ringer Volume: When the phone is idle (not on a call), use the Volume buttons (+/-) to adjust the ring volume.
• Call Volume: During an active call, use the Volume buttons (+/-) to adjust the listening volume for the handset, headset, or speakerphone.
• Mute: To mute or unmute your microphone during an active call, press the Mute button (microphone with a slash through it).

6. Maintenance

To ensure the longevity and proper functioning of your Grandstream GXP1625 IP Phone, follow these maintenance guidelines:

• Cleaning: Use a soft, dry cloth to clean the phone's surface. For stubborn marks, a slightly damp cloth with mild, non-abrasive cleaner can be used. Avoid excessive moisture.
• Environment: Keep the phone in a dry, dust-free environment. Avoid exposing it to direct sunlight, extreme temperatures, or high humidity.
• Handling: Handle the phone and its components with care. Avoid dropping the phone or pulling on the cords forcefully.

7. Troubleshooting

If you encounter issues with your GXP1625 IP Phone, try the following troubleshooting steps:

• No Power: Ensure the power adapter is securely connected to both the phone and a working power outlet, or that the Ethernet cable is connected to a PoE-enabled port.
• No Dial Tone: Check network cable connections. Verify that your SIP account is properly registered and active. Restart the phone by unplugging and re-plugging the power.
• Poor Audio Quality: Check network connection stability. Ensure the handset/headset cord is securely plugged in. Adjust the call volume using the volume buttons.
• Cannot Make/Receive Calls: Verify network connectivity and SIP account registration status. Check firewall settings if applicable. Consult your VoIP service provider for account-specific issues.

For more complex issues or advanced troubleshooting, refer to the detailed User Guide (PDF) or contact Grandstream technical support.

8. Specifications

9. Warranty and Support

For information regarding product warranty, please refer to the warranty card included in your product packaging or visit the official Grandstream website. For further technical assistance or support, you can consult the comprehensive User Guide (PDF) or contact Grandstream customer support directly.