User Manual
Table Of Contents
- DOCUMENT PURPOSE
- CHANGE LOG
- GUI INTERFACE EXAMPLES
- WELCOME
- PRODUCT OVERVIEW
- GETTING STARTED
- BASIC OPERATIONS
- Turning the Handset ON / OFF
- Setup Wizard
- Register DP720 Handset to DP750 Base Station
- Using DP720 with Multiple DP750 Base Stations
- Unregister the DP720
- Obtain DP750 Base Station IP Address via paired DP720
- Setting the Key Lock
- Locating a DP720 Handset from DP750 Base station
- Checking System Status
- Basic Network Settings
- Change Menu and LCD Timeout
- Return to Idle Screen
- Register a SIP Account
- PHONE SETTINGS
- Editing the Handset’s name
- Changing the Base PIN Code
- Selecting Phone Language
- Activate/Deactivate Hands-Free Mode
- Muting the Microphone
- Adjusting Speaker and Earpiece Volume
- Ringtones
- Date and Time
- Outgoing Default Line
- Factory Functions
- DP720 Handset Firmware Upgrade
- Reboot DP750 Base Station
- Reset DP720 Handset
- CALL OPERATIONS
- RESTORE FACTORY DEFAULT SETTINGS
- EXPERIENCING DP750/DP720
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DP750/DP720 User Guide
Version 1.0.3.31
RESTORE FACTORY DEFAULT SETTINGS
Warning:
Restoring the factory default settings will delete all configuration information on the phone. Please backup or
print all the settings before you restore to the factory default settings. Grandstream is not responsible for
restoring lost parameters and cannot connect your device to your VoIP service provider.
Please follow the instructions below to reset the phone:
1. Press MENU button to bring up the keypad configuration menu;
2. Select Settings and enter;
3. Select System Settings Factory Reset;
4. A warning window will pop out to make sure a reset is requested and confirmed;
5. Press Yes softkey to confirm and the phone will reboot.
6. To cancel the Reset, press No softkey instead.
Users also can perform factory reset using combo keys on DP720 during booting up prior it’s fully booted, to
give DP720 the ability to recover from some extreme cases like self-reboot or stuck right after booted up.
Please refer to following procedure for DP720 factory reset using combo key:
1. Connect the USB cable and power off DP720.
2. Power on DP720 and wait for Green LED.
3. Press 3 times Central Key (OK/Selection Key) quickly after Green LED on.
4. Press Speaker Key (left bottom) first and then Mute Key (right bottom) after Red LED on.
5. DP720 LED will start blinking in 3 colors: Green, Red and Orange if factory reset successful
triggered.
6. Wait for about 1-3 minutes, the DP720 will boot up with setup wizard for initial language and date
format settings.