I've read from one of the 206cc French sites that there is an ISO port for phone muting, but there is an empty hole in the ISO socket for this port, so you'll need to somehow plug in the phone mute wire from your carkit into this port.
It was much easier on my Pioneer headunit. Just connected it's radio mute wire to the carkit and it was done.
[img]http://www.aussiefrogs.com/forum/graemlins/peugeot.gif[/img] omak
2003 Peugeot 206CC 2.0 Aluminium Grey [Sold]
2003 BMW 325CI Orient Blue [Sold]
2003 BMW M3 SMGII TiAg
You were right, I attached the phone mute to the empty hole in the lower right of the socket and vwalla - when the phone rings I get "Ext. Mute" on the LCD and the CD stoppes...