Audio: Use *EACE:3 to indicate call state changed Network: add reading of bit error rate by AT+CSQ

Uses *EACE:3 to send unsolicited event to Android so that Android
will request call progress state to get Alerting state.
Used AT+CSQ to retrieve bit error rate for requestSignalStrength
function.

Signed-off-by: Sverre Vegge <sverre.vegge@stericsson.com>
4 files changed