Overview
5 Mute button/PTT
button
If used as the mute button, you can turn on/off audible signals
in Idle mode, silence the ring signal at incoming calls, and turn
on/off the microphone during calls.
If used as the PTT button, you can switch the microphone on
during a PTT group call.
1
The microphone is switched on as
long as the button is pressed.
6 Soft keys The three soft keys are located just beneath the display and
the function of each soft key is indicated by text in the display
just above the keys.
In Idle mode, the soft keys can be used for specific functions
based on their configuration.
7 Call key Used for answering a call and as a shortcut to the Call list.
8 Navigation keys Left, right, up, down and middle (confirmation) navigation
keys. These keys, except for the middle key, can be config-
ured for shortcuts.
9 Voice mail access
Quick access to the handset’s voice mail.
2
10 Key lock
Upper/lower case
Combined key lock and switch between upper and lower case
text.
11 Microphone Used in voice communication.
12 System connector Used for battery charging, software download, and configura-
tion.
13 Space Used for adding space between words.
14 Sound off key Used for turning on/off audible signals in Idle mode, silencing
the ring signal at incoming calls, and turning on/off the micro-
phone during calls.
15 Tactile indicator Indicates the center of the keypad.
16 End key
On/off key
Used for ending a call, returning to Idle mode, and by a long
press for switching the handset on/off.
17 Color display 2.0-inch TFT full color display with backlighting.
18 Headset connector
3.5-mm connector used for connecting a headset.
3
It is pro-
tected against dust by using the headset connector cover.
Table 1: Status and system icons description
Icon Name Description
1
Requires a WL4 Plus handset.
2
System-dependent feature.
3
Compatible with wired headsets used for Android.
A31003-M2000-U110-01-7619, 29/04/2020
OpenScape WLAN Phone WL4/WL4 Plus, Quick Reference Guide 5
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