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DATASHEET FC6000 Confidential Information 43/53
7 Use Cases
A. Bluetooth HFP & A2DP/AVRCP use cases overview:
a. Head Unit paired with Mobile phone
Handsfree telephony & Phonebook Synchronization
Hands Free Audio Gateway
Hands Free Device
Mobile Phone
Audio unit
Hands Free Telephony
Telephony
Phonebook
Phonebook synchro
FC6000
Connections Strategy
If the Host does not store the last synchronized phonebook, it is always available for the Host
at Module start up. Right after HFP connection (which is initiated to the last connected
device), it is possible to place an outgoing call if requested. Once HFP initialization has
finished (end of SLC/Extended SLC), the Module starts the best phonebook synchronization
method available on the phone. The Module alerts the Host that the updated phonebook with
new entries is available, and ready to be displayed on the HMI.
If an incoming/outgoing call occurs during the phonebook synchronization process,
depending on the method of phonebook synchronization which is used, the process is
paused. Once the call is finished, the phonebook synchronization restarts from where it has
been stopped, and the call history is updated. This is transparent for the end user.
Calls Management
For incoming calls, the Caller ID (received from phone via CLIP or CLCC) is sent to the Host
to be displayed on the HMI.
HFP indicators such as signal level, battery level and network provider are forwarded to the
Host to be displayed on the HMI. CIND/CIEV indicators or GSM AT Commands are used for
this purpose.
Service Continuity
This feature handles the audio management of a call when the module is powered on/off:
- When the module is powered on, the module automatically connects HFP to the
phone and establishes the communication ((e)SCO connection) through the speakers
during the SLC.
- When the module is powered off, the module transfers the audio to the phone
((e)SCO disconnection) and disconnects the Bluetooth link.
This process ensures the Host to be immediately ready to start Handsfree usage.