2012 Buick LaCrosse Owner's Manual - Page 249

Infotainment System Conference Calling Conference calling and three way calling must be supported on the mobile phone and enabled by the wireless service carrier to work. To start a conference calling while in a call: 1. Press SELECT and select Enter Number. 2. Enter the character sequence then select call. 3. After the call has been placed, press SELECT and choose Merge Calls. 4. To add more callers to the conference call, repeat steps 1 through 3. The number of callers that can be added are limited by your wireless service carrier. To disconnect from one caller while in a conference call, select Detach Number from the menu and select the number to hang up on. Ending a Call Press SELECT and select Hang Up, or press the $ / i button on the steering wheel controls. To Mute a Call Press SELECT and select Mute Call. To Cancel Mute Press SELECT and select Mute Call. Dual Tone Multi-Frequency (DTMF) Tones The UHP system can send numbers during a call. This is used when calling a menu driven phone system. To access this system: 1. Press SELECT and select Enter Number. 2. Enter the character sequence. 7-75 Operating UHP Using Voice Control The voice control of the UHP system enables you to operate several functions of the mobile phone using your voice. The UHP system uses voice commands to control the system and dial phone numbers. After input of the command the infotainment system guides you through the dialogue with appropriate questions and feedback to achieve the desired action. The commands and numbers can be spoken without a pause between the individual words. In addition you can save telephone numbers under a name tag that is selectable by you. The telephone connection can be set up with this name. In the event of incorrect operation or incorrect codes, the voice control gives you voice feedback and requests you to re-enter the desired command.