1. Autodial System BY: KATPALLY AMRUSHA ALIGAPALLY ANUSHA

2. Outline  Definition  Resources used  Parameters used in autodialer  Flow chart  Autodialer without scripting  Autodialer with scripting  Features  Problem faced  Trouble shooting  Applications  References  Conclusion

3. Definition An autodialer is an electronic device or software that automatically dials telephone numbers. Once the call has been answered, the auto dialer plays a recorded message.

4. Resources Used  One virtual machine  5 Digium phones  Bash scripting  Asterisk server

5. Parameters used in Autodialer 1. Channel 2. Caller ID 3. Wait Time 4. Max Retries 5. Retry Time 6. Priority

6. Flowchart. Scripting.call file Var/spool/outgoing Dial Extension 1 Dial Extension 2 Dial Extension 3 Server

7. Autodialer without Scripting  Create call files in extensions.conf  Create separate.call files  To generate calls, move all the call files into /var/spool/asterisk/outgoing.

8. Files. Call file Extensions.conf

9. Scripting  Why scripting?  Type of scripting used?

10. Autodialer with Scripting  Create a text file and mention the extension numbers in the file.  The scripting access text file and the code is automatically moved into call file through /var/spool/asterisk/outgoing.  To check step by step execution, we have used the command “bash –x filename”.  To run the program we used this command “./filename”.

11. Files Extensions.conf Proj.txt

12. Feature: Dialplan

13. Extensions.conf with dialplan

14. Demonstration

15. Problems faced  We faced a problem when we were running the script, the phones were ringing continuously even after we turned off the putty and virtual machine.  There was difficulty in building the bash scripting. As we were completely new to scripting we have faced problem while working on scripting.  We tried for wake up, as there was a small bug in wake up alarm, we were unable to find it out.

16. Trouble Shooting  We had changed the maxretries, wait time and retry time to overcome continuous ringing.  We tested the scripting several times to remove the flaws in it.

17. Applications  Autodialer can be used in call centers  In order to conduct surveys for business, politics, TV shows etc.  To remind appointments in business, hospitalization, schools etc.  Autodialer is used in the places where automatically multiple phones should be dialled.

18. Extendibility  We have tried only bash scripting, we can implement auto dialer with perl, VB, python.  We have implemented it only on few phones. We can implement it on several phones

19. Conclusion In this way, the Auto dialler is implemented in a desired way by saving time and cost.

20. References  Asterisk- The Definitive Guide (4th edition)  Bash Beginners Guide  http://www.voip-info.org/wiki/view/Asterisk+autodial+out  http://www.voip- info.org/wiki/view/Bulk+Call+Generation+Using+Asterisk  http://www.voip-info.org/wiki/view/Asterisk+auto- dial+out+deliver+message