2006 Mercedes C-Class Owner's Manual - Page 231

Controls in detail Audio system Muting a call It is possible to mute a call; the caller is then no longer able to hear you. Mute on Press MUT soft key. MIC MUTE will appear in the display. Talking with two callers at the same time If you wish to receive or place another call during an already active call, you can accept or place the second call and switch between the callers or combine them into one call. Note that the features described here are depending on availability from your mobile phone service provider. Placing/accepting a second call Place new call by entering telephone number manually. Press s button. You are connected to the second caller; the first caller is kept on hold. or Press s button to accept a second call. 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. Mute off Press MUT soft key again. Terminating a call Press t button. The current call is terminated and the muted audio source becomes active again. 230