IMPORTANT: This article applies only to specific products and/or operating systems. Check Applicable Products and Categories for details.
Depending on the type or brand of the mobile device, it sometimes happens that sound is output from the car speakers during a call. If applicable, press the Mode button of the car stereo to activate the device that you intend to use throughout the call.
If you are using the RSX-GS9, press the Play/Pause button to transfer call.