Function
Function
Phone
The system is a handsfree system which allows the customer to control their own cell phone from the vehicle and allows the customer to use the vehicle audio system during calls.
The following telephone functions are available via the vehicle's buttons and display when a cell phone is connected to the bluetooth phone module (BPM) via bluetooth:
- Receive incoming calls with number presentation
- End telephone calls
- Initiate telephone calls via normal number dialing
- Searching and initiating telephone calls from the mobile telephone's phone book. In vehicles with model year from and incl. 2012 the Bluetooth phone module (BPM) is equipped with PBAP - Phone Book Access Profile. PBAP is a new standard for faster transfer of the phone book from the customer's mobile telephone to Bluetooth phone module (BPM).
- Accessing last number dialed/received/missed calls on the cell phone
- Activating voice activated function in the cell phone
- Transfer of sound between the vehicle's audio system and the cell phone can occur without interrupting the call.
- A2DP - Advanced Audio Distribution Profile. With A2DP the customer can play back music from their mobile telephone in the car's loudspeakers via Bluetooth phone module (BPM). For vehicles with model year from and incl. 2012.
The Bluetooth phone module (BPM) (16/147) has no keypad of its own for menu management but is either controlled via the keypad on the Climate control module (CCM) (3/112) or via the steering wheel buttons. Climate control module (CCM) transmits the signals for menu management to the infotainment control module (ICM) (3/281) via the CAN network. The infotainment control module (ICM) then transmits the signals onward to the Bluetooth phone module (BPM) via the MOST network.
When using the menu via the steering wheel buttons, information is transmitted from the steering wheel module (SWM) (3/254) to the infotainment control module (ICM) via LIN communication. The information is then transmitted to the Bluetooth phone module (BPM) via the MOST network.
Menu management is displayed for the user in the display for the infotainment control module (ICM). Information is transmitted from the Bluetooth phone module (BPM) to the infotainment control module (ICM) via the MOST network.
When starting the Bluetooth phone module (BPM), receiving incoming calls or when using the phone, a request to use the display will be transmitted to the infotainment control module (ICM).
During conversations via handsfree the microphone and speakers which are connected to the Audio module (AUD) (16/105) and Integrated Audio Module (IAM)(16/1) are used. Bluetooth phone module (BPM) transmits a request to the Infotainment control module (ICM) to receive access to the speakers and microphone. The infotainment control module (ICM) transmits the request onward to the Audio module (AUD) and Integrated Audio Module (IAM). The communication between the Bluetooth phone module (BPM), infotainment control module (ICM), Audio module (AUD) and Integrated Audio Module (IAM) occurs via the MOST network.
Managing bluetooth connections
When the system is first activated the customer is led through a pairing process so that the Bluetooth phone module (BPM) and the cell phone recognize and approve each other. This process usually only needs to be carried out once for each cell phone to be used in the vehicle.
The pairing process starts by the Bluetooth phone module (BPM) searching for all nearby blue tooth units. When this search is complete a list is presented for the user with all the cellphones which were found during the search. The name which occurs in the list can normally be set on the customer's cell phone. Note that the bluetooth function in the cell phone must be active and it must be possible to search for the cell phone for it to appear in the list.
When the customer selects their cell phone in the list the units must exchange identity information with each other. A randomly generated 4 figure code is presented for the user in the display in the infotainment control module (ICM). The code can then be entered in the cell phone to complete the pairing process. If this fails the user can try again.
When the process has been successful, the cell phone automatically connects to the Bluetooth phone module (BPM) and the phone functions become available. If the copying of the phonebook and call lists are supported by the cell phone, these will be automatically transferred to the Bluetooth phone module (BPM) after the devices have been connected.
This process can take a few minutes the first time, and the phonebook is not available during this time.
The next time the customer enters the vehicle with that cell phone it will be connected to the Bluetooth phone module (BPM) automatically. Note that the bluetooth function must be active in the cell phone for the automatic connection to occur. The previously copied phone book is available immediately, but a new copy will be taken in the background to ensure that any changes in the customer phonebook are available.
A total of five phones can be paired to the vehicle at the same time. However only one cell phone can be connected, i.e. can be controlled from the vehicle and connect sound via the vehicle.
On start up, the Bluetooth phone module (BPM) will automatically try to connect the cell phone which was most recently connected to the system. If this cell phone is not detected a list of all paired cellphones and the opportunity to pair a new cell phone is presented to the user. It is then possible to change the connected phone while driving.
It is also possible to remove cellphones from the list of paired phones.