2005 Mercedes C-Class Owner's Manual - Page 216

Controls in detail Audio system Press s button to accept a second call. Terminating a call Press t button. The current call is terminated. You are again connected with the caller previously placed on hold. Combining two calls Press 3 and s buttons. The calls are combined into one call. Terminating a combined call Press t button. The connection to both callers is terminated. TDMA or CDMA network phones Using your Mercedes-Benz specified mobile telephone*, a number of functions and operating steps can be performed and displayed in the audio system display. Further operating instructions not covered here can be found in the operating instructions for the multifunction steering wheel and the mobile telephone*. If your audio system is set up for telephone operation, the t symbol will appear in the display. When you insert your Mercedes-Benz specified mobile telephone* into the telephone cradle, you will be prompted to enter your PIN for 30 seconds ( page 215). This display disappears when you press any button. When your mobile telephone is inserted into the telephone cradle, you will see the reception strength in the upper right-hand corner of the display. i You will be notified of the second call acoustically, but you will not see this in the display. You are connected with the second caller; the first caller is kept on hold. Switching between calls Press 2 and s buttons. This switches between the calls. The non-active call is kept on hold. 214