2005 Mercedes C-Class Owner's Manual - Page 217

Controls in detail Audio system Switching on the telephone Switching on the telephone Press h button. If you have programmed an unlock code for the telephone, you must now enter the code. Press OK soft key after entering correct code. The telephone is unlocked. If you have entered an incorrect code, you must enter the correct code. Switching off the telephone Press h button for approx. three seconds. PROCESSING appears in the display until the telephone is off. Afterward, PHONE OFF appears in the display. Adjusting sound Adjust sound during a telephone call. Sound adjustment ( page 187). Placing a call Entering a telephone number and starting the dialing process Adjusting the volume Enter code using buttons 1 to R. If necessary, correct number entered with the CLR soft key. Press soft key briefly to delete the last digit entered; press soft key and hold to delete the complete number. Turn rotary control of N button during a telephone call. The volume will increase or decrease depending on the direction turned. Enter desired telephone number using buttons 1 to R. The number can have up to 32 digits, but only twelve of these are visible in the display. i The volume can be adjusted separately for telephone mode and audio mode. 215