Keypad Diagnostics; Audio Loopback - Grandstream Networks WP820 User Manual

Proceed from Diagnostics APP�� Click on Select to run LED Diagnostics, and you can verify if the LED color changes upon key
press during the test:
Figure 100: LED Diagnostics

Keypad Diagnostics

Proceed from Diagnostics APP�� Click on Select to run Keypad Diagnostics, and you can verify if the keypad buttons are
working fine:
Figure 101: keypad Diagnostics

Audio Loopback

Proceed from Diagnostics APP�� Click on Select to run Audio Loopback, so that you can verify if the microphone, earphone,
and back speaker are working fine.