1. Private Branch Exchange(PBX) System wish Asterisk Advisor ： Lian-Jou Tsai Student ： Yi-Ting Lin

2. Outline  Motivation  Abstract  PBX system  Telephony Technology  System Setting  System Application  Conclusion & Advance

3. Motivation How to achieve a simple personal PBX system.

4. Abstract This study will introduce PBX system including Asterisk and SIP protocol. There following introduce Telephony Technology include PSTN. In the end, I’ll tell you what is this system’s feature.

5. PBX system

6. IP PBX system architecture

7. Cloud 1XXX 2XXX

8. Asterisk architecture

9. SIP Protocol

10. Telephony Technology PSTN & VoIP

11. Public switched telephone network(PSTN)

12. PS TN VoIP Server Voice over Internet Protocol (VoIP)

13. System Setting

14. How to add a user

15. How to add a extension with a call

16. You just need to write this The user number is not extension number. The user number is not only number. Notice !!!

17. Conclusion & Advance In this time, it will must be so many old smart phone in a house. The old smart phone can be a sip phone in my PBX system. In android 4.X, this application is already in android system. iOS can be a sip phone too. But it can’t run app in background. if you want to use this application in your IPhone you have to open a app in using.

18. http://www.asterisk.org/ http://www.888voip.com/featured-solution/trixbox/ http://www.elastix.org/index.php/en/ http://www.freepbx.org/news/2013-10-01/latest-news-from-freepbx-october-2013 http://www.asterisk.org/get-started Reference

19. Thanks your patient