If the phone is connected to a car kit:
The options will be different; you may select one of three volume levels (VOLUME LEVEL 1, 2, 3) as well as TONES OFF (press 
or 
to select).
DTMF tones can be sent (when in a call) even if the keypad tones are switched off.
Ringing Volume (Menu 6)
This function allows you to select and demonstrate the ringing volume level, or set it to off. You may select:
–RINGING LOW: Quiet ringing tone.
–RINGING HIGH: Loud ringing tone.
–SILENT SERVICE: No ringing tone; instead, when an incoming call is received, only a short beep will be heard, and the lights will flash. The message SILENT will be displayed (when you are not entering digits) to remind you that there will be no ringing tone. All other tones (including keypress tones), except warning tones, will be switched off.
To set ringing volume level:
APress MENU 6.
BPress 
or 
to select the option you want.
CPress STO to confirm the setting and hear a sample of the volume level.
If the phone is connected to a car kit:
The options will be different; you may select one of five volume levels (RINGING LEVEL 1, 2, 3, 4, 5) as well as SILENT SERVICE (press 
or 
to select) and STO to confirm.
NAM Select (Menu 7)
The phone has a
This menu function allows you to select either of your numbers (if two have been programmed).
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