2010 Buick LaCrosse Owner's Manual - Page 207

Infotainment System Accepting a Call Press b g on the steering wheel control to answer the incoming call, or touch the Answer option to answer the call. 6-63 Call Waiting Call waiting must be supported on the Bluetooth phone and enabled by the wireless service carrier to work. Switching Calls (Only Available with Call Waiting) This features allows you to switch between calls making one call active and placing the other on hold. 5. The Phone menu will be displayed with the name of the phone paired. Accepting or Declining an Incoming Call When an incoming call is received, the infotainment system mutes any audio being played and sounds a ring tone. Declining a Call Press the c / $ on the steering wheel controls or select the Decline option to decline the call.