Specifications

Windows Embedded Automotive 7 Deep Dive: Phone Core and Media Core 30
Multiple Simultaneous Calls
A user can accept or place a second call while on an active call. When the user makes or accepts
a second call—for example, a call waiting call—the active call is placed on hold, and the second
call becomes the active call. The user can then either switch the calls or join them into a
conference call. The application alerts the user through the UI that the first call is on hold.
Table 7 shows the multiple call behaviors supported by Windows Embedded Automotive 7.
Table 7: Supported multiple call behaviors
Status
Action
Behavior
+CLCC Support
One call
Place call on-hold
First call placed on hold
N/A
One call
Second incoming call
accepted
First call placed on hold
Second call is active
N/A
One call
Second incoming call
rejected or ignored
First call retains state (on hold or
active)
N/A
One call on hold
Resume call
First call active
N/A
One call
Terminate call
No calls
N/A
One call
Initiate second call
First call on hold
Second call outgoing
N/A
One call held
One call active
Third incoming call
Ignore third call until it is
missed.Once “missed,” notify the
user with call history of who it was.
Yes – Use +CLCC to
achieve behavior
No – Use +CLIP if
received or simply
state “missed call”
First call active
Second call on hold
Swap
Second call active
First call on hold
N/A
One call active
One call held
Join calls
One conference call with both calls
active
N/A
Conference call
Place conference call
on hold
Not allowed
N/A
Conference call on hold
Change conference
call to active
Not allowed
N/A
Conference call
One incoming call
Not allowed
N/A
Conference call
One call on hold
Swap calls
Not allowed
N/A
Conference call
One call on hold
Remove call from
conference to active
Not allowed
N/A
Conference call with 2 calls
Remove call from
conference to active
Not allowed
N/A