1. Introduction
About the Grandstream DP730
The Grandstream DP730 is a high-performance DECT cordless IP phone designed to provide mobility and advanced telephony features within a VoIP network. It is ideal for business, warehouse, retail, and residential environments, offering seamless communication and integration with Grandstream's DP750 and DP752 DECT VoIP base stations.
Key features include support for up to 10 SIP accounts and 10 lines per handset, full HD audio for clear conversations, a vibrant 2.4-inch color LCD, and a 3.5mm headset jack for hands-free operation. The DP730 also boasts a dedicated push-to-talk button and built-in proximity and accelerometer sensors for enhanced functionality.
When paired with a compatible Grandstream DECT Base Station, the DP730 provides an impressive outdoor range of up to 400 meters (with DP752) and an indoor range of 50 meters. Users can enjoy extended usage with up to 40 hours of talk time and an exceptional 500-hour standby time.

2. Package Contents
Please verify that all items are present in your package:
- Grandstream DP730 Handset
- Charger
- 1 x CR123A Battery (pre-installed or included separately)
Note: A compatible Grandstream DECT Base Station (DP750 or DP752) is required for operation and is sold separately.
3. Setup Guide
3.1 Battery Installation and Initial Charging
- Install the Battery: Open the battery compartment cover on the back of the DP730 handset. Insert the provided CR123A battery, ensuring correct polarity. Close the battery compartment cover securely.
- Place in Charger: Connect the charger to a power outlet. Place the DP730 handset into the charging cradle. The phone will begin charging.
- Initial Charge: For optimal battery performance, allow the handset to charge for at least 10 hours before its first use. The battery indicator on the display will show charging status.
3.2 Pairing with a DECT Base Station
The DP730 handset must be registered with a Grandstream DP750 or DP752 DECT VoIP base station to function. Refer to your base station's manual for specific registration instructions. General steps are as follows:
- Activate Registration Mode on Base Station: Typically, this involves pressing and holding a registration button on the DP750/DP752 base station until an indicator light flashes.
- Initiate Handset Registration: On the DP730 handset, navigate to the "Registration" or "Pairing" menu option (usually found under Settings or Handset options).
- Enter PIN (if prompted): If your base station requires a PIN for registration, enter it on the DP730 handset. The default PIN is often "0000" or "1234", but check your base station's documentation.
- Confirmation: Once successfully registered, the DP730 display will indicate "Registered" or show the base station's name, and the base station's indicator light will become solid.
4. Operating Instructions
4.1 Basic Call Functions
- Making a Call:
- Dial the desired phone number using the keypad.
- Press the Call/Green Phone button to initiate the call.
- Answering a Call:
- When the phone rings, press the Call/Green Phone button.
- Ending a Call:
- Press the End Call/Red Phone button.
- Adjusting Volume: Use the side volume buttons during a call to adjust the earpiece or speakerphone volume.
4.2 Using SIP Accounts
The DP730 supports up to 10 SIP accounts and 10 lines. You can select which SIP account to use for outgoing calls or assign specific accounts to different lines. This configuration is typically managed via the base station's web interface.
- Selecting an Account: Before dialing, you may be able to select a specific SIP account from the phone's menu or by pressing a dedicated line key (if configured).
- Account Management: For adding, modifying, or deleting SIP accounts, access the web configuration interface of your DP750 or DP752 base station.
4.3 Advanced Features
- Push-to-Talk (PTT): The DP730 features a dedicated PTT button. When configured, this allows for instant voice communication with other compatible handsets or groups within your DECT network. Refer to your base station's manual for PTT setup.
- 3-Way Conferencing: While on an active call, you can initiate a 3-way conference. Consult the phone's on-screen menu or your base station's guide for the exact steps, which usually involve placing the current call on hold and dialing the third party.
- Headset Jack: A 3.5mm headset jack is provided for hands-free communication. Plug in a compatible headset to use this feature.
- Display and Navigation: The 2.4-inch color LCD displays call information, menus, and status. Use the navigation pad (up, down, left, right, and center OK/Select button) to browse menus and select options. The soft keys below the display change function based on the current screen context.
5. Maintenance and Care
5.1 Battery Care
- Regular Charging: Place the handset in the charging cradle when not in use to ensure it is always ready.
- Avoid Extreme Temperatures: Do not expose the battery or handset to extreme heat or cold, as this can reduce battery life and performance.
- Battery Replacement: If you notice a significant decrease in talk time or standby time, it may be time to replace the CR123A battery. Use only approved replacement batteries.
5.2 Cleaning the Handset
- Power Off: Before cleaning, ensure the handset is powered off and removed from the charging cradle.
- Gentle Cleaning: Use a soft, dry, lint-free cloth to wipe the exterior of the handset.
- Avoid Liquids: Do not use liquid cleaners, aerosols, or harsh chemicals, as these can damage the phone's components.
6. Troubleshooting
If you encounter issues with your Grandstream DP730, please refer to the following common solutions:
6.1 No Power / Handset Not Turning On
- Ensure the battery is correctly installed and fully charged.
- Verify the charger is properly connected to a power outlet and the handset is seated correctly in the cradle.
- Try removing and reinserting the battery.
6.2 Cannot Make or Receive Calls
- Check if the handset is registered to a DECT base station. The display should indicate registration status.
- Ensure the base station is powered on and connected to your network.
- Verify that your SIP accounts are correctly configured and registered on the base station.
- Check for any network connectivity issues with your VoIP service.
6.3 Poor Audio Quality
- Move closer to the DECT base station to improve signal strength.
- Ensure there are no major obstructions (e.g., thick walls, large metal objects) between the handset and the base station.
- Check your internet connection speed and quality, as VoIP calls rely on network performance.
- If using a headset, ensure it is fully plugged in and functioning correctly.
6.4 Handset Out of Range
- The DP730 has an outdoor range of up to 400 meters (with DP752) and an indoor range of 50 meters. Ensure you are within these operational limits.
- Consider the placement of your DECT base station to maximize coverage. Avoid placing it near large metal objects or other electronic devices that may cause interference.
7. Technical Specifications
| Feature | Detail |
|---|---|
| Model Number | DP730 |
| Product Dimensions (L x W x H) | 8.66 x 6.3 x 4.72 inches |
| Item Weight | 1 pound |
| Display | 2.4 inch (240x320) color LCD |
| SIP Accounts | Up to 10 per handset |
| Lines Supported | Up to 10 per handset |
| Talk Time | Up to 40 hours |
| Standby Time | Up to 500 hours |
| Outdoor Range (with DP752) | Up to 400 meters |
| Indoor Range | Up to 50 meters |
| Headset Jack | 3.5mm |
| Battery Type | 1 x CR123A (included) |
| Color | Black, Silver |
| Material | Plastic |
| Power Source | Corded Electric (for charger) |
| Telephone Type | Cordless DECT VoIP |
| Manufacturer | Grandstream |
| Date First Available | March 10, 2019 |
8. Warranty and Support
Grandstream products typically come with a limited manufacturer's warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Grandstream website.
For technical support, product documentation, firmware updates, and frequently asked questions, please visit the Grandstream support portal. You can usually find contact information for customer service on their official website.
It is recommended to keep your purchase receipt as proof of purchase for warranty claims.





