9.
On-hook / Power
key
Terminates calls, or turns the handset on / off.
10
.
Alphanumeric
Keypad
Provides the digits, letters, and special characters in context-sensitive applications. For + sign,
press and hold key 0.
11
.
# / Lock key
Locks keypad against unintentional entries when keep pressing #.
Press and hold # key for approximately 2 seconds to lock the keys.
Press Unlock softkey and then # to unlock the keys.
12
.
Mute key Activates or deactivates the mute feature.
13
.
Hands-free /
Speaker key
Switches between handset and hands-free / speaker modes.
14
.
Microphone Picks up audio earpiece and hands-free calls.
Table 12: Keypad Keys Description
Key Description
1. Proximity sensor
The proximity senor can detect and measure gravitational acceleration, tilt,
vibration, altitude changes, and static position.
2. Earphone Delivers audio output.
3,
4
Volume up / Down Keys Configure the handset and ringtone volume.
5. PTT Key PTT (Push-to-Talk) button, to initiate PTT call.
6. Hands-free / Speaker key Switches between Handset and Hands-free / Speaker modes.
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