Ericsson Dialog 4187 Plus User Manual page 9

Dialog 4187 Plus
11 Programmable keys (function keys)
Ten keys for storing frequently used numbers. You can store two
numbers per key (first level and second level). See sections
a function key" on page 29 and
keys" on page 84.
12 Microphone
Used for handsfree conversation.
13 Mute
a. Switch microphone on or off. See section "Mute" on page 44.
b. Switch off the ring signal in idle mode or when ringing. See
sections
page 18.
14 Loudspeaker on/off
Switch loudspeaker on or off. See section
page 43.
15 Headset key
Activate headset. See section
16 R-key
Used for example to make an inquiry, to transfer a call or to
establish a conference, see section
Note: Sometimes it is required to change the flash time for
the R-key, see section
17 Volume control
Adjust the volume. See section
loudspeaker
18 Loudspeaker
19 Prog On/Off switch
Enable or disable the program key. See section
function key
20 Message Waiting switch
Switch Message Waiting indication on or off. Also used to reverse
the polarity in case of crossed line cables. See section
Waiting indication" on page 90.
"Set the number of programmable
"Silent ring" on page 18 and
"Headset
"Flash time
"Handset, headset and
volume" on page 78.
programming" on page 90.
"Mute ring signal" on
"During Calls" on
(optional)" on page 91.
"During Calls" on page 43.
(R-key)" on page 85.
"Enable/Disable
"Message
Description
"Dial by
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