Bosch Integral TS13 Operating Instructions Manual page 73

Controls louder
This allows you to change the volume of the receiver and the loudspeakers
during a conversation.
You can set the ringing tone louder while the telephone is ringing.
When the telephone is in idle mode, this key brings you into the
"Accoustics and contrast setting" menu.
Controls quieter
This allows you to change the volume of the receiver and the loudspeakers
during a conversation.
You can set the ringing tone quieter while the telephone is ringing.
When the telephone is in idle mode, this key brings you into the
"Accoustics and contrast setting" menu.
D
Delete key
This allows you to correct entered numbers,. for call diversion, for example.
You can delete the individual characterts from right to left or delete the en-
tire entry field.
Display call list (! p. 22)
All calls that you do not answer are stored in the call list.
F
Function key free (! p. LEERER MERKER)
Erase the current programming of a function key.
H
Headset present
Switch the menu item to
– "Handset", if a headset is connected to the handset interface,
– "AEI", if a headset is connected to the AEI interface,
– "No" if no headset is connected.
If in doubt, look it up
Telephone functions overview "
73