98 Infotainment system■ Switch calls: switch between calls,if there are several calls.■ Mute call: mute a call.Mobile phones and CB radioequipmentInstallation instructions andoperating guidelinesThe vehicle specific installationinstructions and the operatingguidelines of the mobile phone andhandsfree manufacturer must beobserved when installing andoperating a mobile telephone. Failureto do so could invalidate the vehicletype approval (EU directive 95/54/EC).Recommendations for fault-freeoperation:■ Professionally installed exteriorantenna to obtain the maximumrange possible,■ Maximum transmission power 10watts,■ Installation of the phone ina suitable spot, consider relevantNote in the Owner's manual,chapter Airbag system.Seek advice on predeterminedinstallation points for the externalantenna or equipment holder andways of using devices witha transmission power exceeding 10watts.Use of a handsfree attachmentwithout external antenna with mobiletelephone standards GSM900/1800/1900 and UMTS is onlypermitted if the maximumtransmission power of the mobiletelephone is 2 watts for GSM 900 or1 watt for the other types.For reasons of safety, do not use thephone while driving. Even use ofa handsfree set can be a distractionwhile driving.9 WarningOperation of radio equipment andmobile telephones which fail tomeet above mentioned mobiletelephone standards is onlypermitted using an antennalocated outside of the vehicle.CautionMobile telephones and radioequipment may lead tomalfunctions in the vehicleelectronics when operated insidethe vehicle with no exteriorantenna, unless the abovementioned regulations areobserved.