Karel NT30 D, User Manual, Page: 18 / 48

NT30D Technical Reference and User Guide
7
VOICE CONTROL KEYS
“Volume
"
Key: It is used to increase or decrease the level (0 - 19) of the voice
received during conversation.
“Mute ” Key: It is the key that provides interruption of the outgoing voices during the
all conversations and which signifies that via the LED inside it. Pressing the key for a
second time will maintain the voice transmission to the opposite party again.
“Speaker ” Key: This is the key with red icon that puts the telephone into the
‘handsfree’ status and that signifies this through an embedded LED. The key is called ‘HF’
key, and the LED inside it is called ‘HF LED’.
(Handsfree: It is a feature of telephone that it emits voices into the room or transmits voices
inside the room to the other parties while the handset is still on hook.)
“ ”key performs different functions in different cases:
•
When it is pressed while the handset is on hook, the telephone is picked up as
“handsfree” and the HF LED lights. In this case, a number can be dialed and a
conversation can be made without lifting the handset. Pressing the key during a
conversation terminates the conversation.
•
If it is pressed while dial tone or busy tone is being received over the handset or while
a conversation is being made, the phone gets into the handsfree status and the rest of
the conversation goes on via the HF Speaker.
•
If the handset is lifted during the handsfree status, then the rest of the conversation
goes on via the handset.
“Handset/Headset ” Key: It is used to answer an incoming call while the headset is
connected and being used. It works as the same as lifting the handset up or replacing it.