Grandstream Networks WP810 User Manual page 14

19 Microphone
WP825
The following table describe the WP825 keypad keys.
Reference Key
1 Proximity sensor
2 Earphone
3,4 Volume up / Down Keys
5 PTT Key
6 Arrow key combination (Up, Down, Left, Right)
7 Hands-free / Speaker key
● Lock key: Long press to lock keypad against unintentional
Picks up audio earpiece and hands-free calls
WP822 keypad keys Description
Figure 8: WP825 Description
Description
The proximity senor can detect and measure gravitational
acceleration, tilt, vibration, altitude changes, and static position.
Delivers audio output.
Configure the handset and ringtone volume.
PTT (Push-to-Talk) button, to initiate PTT call.
Allows navigation of the cursor through the displayed menu options.
Activates or deactivates the mute feature when pressing on * in idle
screen.
entries, for this to work enable lock screen from LCD settings
under Basic settings => Display