The following table describe the WP820 keypad keys.
Key
1.
Proximity sensor
2.
Earphone
3,4
Volume up / Down Keys
5.
PTT Key
6.
Hands-free / Speaker
key
Figure 4: WP820 Description
Table 4: WP820 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.
Switches between Handset and Hands-free / Speaker modes.
WP820 Administration Guide
Version 1.0.1.15
Description
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