----------------------------------------------------------------
/etc/rc.local
----------------------------------------------------------------
#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

# Print the IP address
_IP=$(hostname -I) || true
if [ "$_IP" ]; then
  printf "My IP address is %s\n" "$_IP"
fi

python /home/pi/Call_Button.py

exit 0
-------------------------------------------------------------------------
/etc/sudoers.tmp ######### modify using visudo only! #########
-------------------------------------------------------------------------
#
# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults	env_reset
Defaults	mail_badpass
Defaults	secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"

# Host alias specification

# User alias specification

# Cmnd alias specification

# User privilege specification
root	ALL=(ALL:ALL) ALL

# Allow members of group sudo to execute any command
%sudo	ALL=(ALL:ALL) ALL

# See sudoers(5) for more information on "#include" directives:

#includedir /etc/sudoers.d
pi ALL=(ALL) NOPASSWD: ALL

#asterisk ALL = NOPASSWD: /usr/share/asterisk/agi-bin/unlock_door.py

-------------------------------------------------------------------------
/home/pi/Call_button.py
-------------------------------------------------------------------------
import RPi.GPIO as GPIO
import time
import os
GPIO.setmode(GPIO.BCM)
GPIO.setup(4,GPIO.IN)
input = GPIO.input(4)
while True:
	input = GPIO.input(4)
	if(not input):
#		print("Button pressed")
		os.system("asterisk -x \"console dial 698\"")
time.sleep(01)

--------------------------------------------------------------
/usr/share/asterisk/agi-bin/unlock_door
--------------------------------------------------------------
#!/usr/bin/perl
$|=1;
system 'sudo /usr/share/asterisk/agi-bin/unlock_door.py';
sleep 3;

--------------------------------------------------------------
/usr/share/asterisk/agi-bin/unlock_door.py
--------------------------------------------------------------
#!/usr/bin/env python

import RPi.GPIO as GPIO
import time
import logging
logging.basicConfig(filename='/home/pi/door_trigger.log',level=logging.DEBUG ,format='%(asctime)s %(message)s')
logging.info('Door Unlocked!')
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
GPIO.setup(17, GPIO.OUT)
GPIO.output(17,True)
time.sleep(5.0)
GPIO.output(17,False)

-------------------------------------------------------------