Specifications

Windows Embedded Automotive 7 Deep Dive: Phone Core and Media Core 18
Message
Description
WM_PHONE_RING
Posted when the phone is ringing.
WM_PHONE_SENDDTMFCOMPLETE
Posted when the user dials a digit, which generates a dual-
tone multi-frequency (DTMF) audio signal, during an active
phone call.
WM_PHONE_SERVICESTATE
Posted to indicate the carrier and service state of the
phone.
WM_PHONE_SIGNALSTRENGTH
Posted to indicate the signal strength.
WM_PHONECORE_START
Posted when the Phone Core component is initialized.
Bluetooth Hardware and Stack
The Microsoft Bluetooth wireless technology stack implementation is a modular, general-
purpose Bluetooth 2.1+EDR–compatible software stack. This stack makes up the core portion of
the Bluetooth wireless technology implementation. Through a Bluetooth wireless technology
connection, devices can exchange data and interact with one another. The host controller
interface (HCI) software module supports various connections (universal asynchronous
receiver/transmitter [UART] and Universal Serial Bus [USB]) to the Bluetooth wireless
technology chip.