Send AT commands using atinout to Huawei E3531 modem after Kannel service has started

init_e3531.sh

#/bin/sh

SERVICE=kannel
ATINOUT_BIN=/usr/bin/atinout
TTY=/dev/gsmmodem

while ! sudo systemctl is-active --quiet $SERVICE; do
    echo "waiting the $SERVICE service to start"	
    sleep 10
done;

echo "$SERVICE service started"
echo "Wait 30 more seconds for initialization"

sleep 30;

# Select Message Service
echo "Setting CSMS..."
echo "AT+CSMS=1" | $ATINOUT_BIN - $TTY -
echo ""
echo "Checking CSMS..."
echo "AT+CSMS?" | $ATINOUT_BIN - $TTY -
echo ""

# Indicate new messages to TE
echo "Setting CNMI..."
echo "AT+CNMI=1,2,0,1,0" | $ATINOUT_BIN - $TTY -
echo ""
echo "Checking CNMI..."
echo "AT+CNMI?" | $ATINOUT_BIN - $TTY -
echo ""

# Report Mobile Termination Error
echo "Setting CMEE..."
echo "AT+CMEE=1" | $ATINOUT_BIN - $TTY -
echo ""
echo "Checking CMEE..."
echo "AT+CMEE?" | $ATINOUT_BIN - $TTY -
echo ""

rc.local

/home/pi/init_e3531.sh > /home/pi/e3531_init.log