Grandstream Networks DP750 User Manual page 25

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Firmware Upgrade
Upgrading the firmware version of the handset
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Factory Functions
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Info
Display the handset status (Firmware, Model, Hardware, IPEI ...)
Call Settings Call settings sub menu includes the following options:
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Do Not Disturb
Enables/disables Do Not Disturb on the phone.
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Call Waiting
Configure the call waiting function.
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Call Forward
Configure the call forward function.
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Speed Dial
Assign the numbers for speed dial.
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Outgoing Default Line
Select the outgoing default line.
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Auto Answer
Enable / Disable the Auto answer functionality.
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Line Status
Display the line status.
Diagnostic Mode
All LEDs will light up. All keys' name will display in red on LCD
screen before diagnosing. Press any key on the keypad to
diagnose the key's function. When done, the key's name will
display in blue on LCD with a prompt message (PASS). To
exit press Back (right soft key).
Audio Loopback
Speak to the phone using speaker/handset/headset. If you
can hear your voice, your audio is working fine. Press "Exit"
soft key to exit audio loopback mode.
LCD ON / OFF
Selects this option to turn off LCD. Press any button to turn on
LCD.
LCD Diagnostic
Enters this option and press Left/Right Navigation key to do
LCD Diagnostic. Press right soft key to quite.
DP750/DP720 User Guide
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