The document discusses developing SIP applications using OpenSER, WeSIP, HTTP and Java. WeSIP adds a SIP servlet programming layer to OpenSER, allowing developers to build SIP and HTTP applications using Java. WeSIP integrates OpenSER, which provides low-level telephony functions, with the SIP servlet and J2EE environment to provide application logic and trigger services. The document provides examples of SIP application types that can be created using WeSIP and OpenSER.

1. SIP APPLICATIONS Developing SIP applications using OpenSER, WeSIP, HTTP and Java...yes you can ! SAN JOSE 17-3-2008

2. WHY WOULD I NEED TO DO THAT ? IMPRESS YOUR BOSS FIND SOMETHING WEIRD FOR YOUR THESIS EXPAND THE BOUNDARIES OF YOUR KNOWLEDGE BEYOND C (YES!! LIVE EXISTS BEYOND C!!) CREATE RICH MULTIPROTOCOL DISTRIBUTED APPLICATIONS

3. APPLICATION EXAMPLES A JAVASCRIPT CLICK-2-CALL WITH REAL-TIME REPORT OF CALL STATUS

4. APPLICATION EXAMPLES A PREPAID SYSTEM WITH ASTERISK OR AN VXML MEDIA SERVER

5. A CALEA REAL-TIME INTERCEPTION SYSTEM APPLICATION EXAMPLES

6. A WEB 2.0 PBX SYSTEM APPLICATION EXAMPLES

7. THEY ALL HAVE IN COMMON THAT ARE SOMEHOW COMPLEX APPLICATIONS INVOLVE SEVERAL COMMUNICATION PROTOCOLS AND SEVERAL SYSTEMS “ DIVIDE AND CONQUER!!” it always results. HERE IS WHERE WESIP COMES APPLICATION EXAMPLES

8. WeSIP WeSIP is a SIP Application Server built on top of OpenSER

9. WeSIP WeSIP adds a SIP Servlet programming layer to OpenSER You can develop your services and applications using existing OpenSER modules (like nat_traversal,registrar,etc...) ...while at the same time enjoying the java programming language facilities Huge set of java libraries SOAP,EJB,JDBC.... WeSIP helps you to integrate OpenSER with other systems and protocols enabling the offer of a new set services

10. OpenSER SIP HTTP WeSIP J2EE environment (EJBs, Servlet, JNDI, JMX, JMS, etc) Low level, telephony-related functions: -Call Routing (LCR) -Access Control (ACL, Auth,etc.) -Accounting (Radius) -Nat Traversal -UsrLoc -Etc... usrs Application Logic B2BUA Web or SIP triggered PBX functionality (JAVA APIs) Trigger IVR Trigger Media Services Intelligent call routing Annoying (no! you're not!) Business Logic -Provisioning -Invoking thrid party services -Billing -(Accounting) -Statistics -... Architecture OTHER COMM PROTOCOL

11. Architecture OpenSER script: Domain Specific Language (DSL) Hiper efficient Call handling Feature-rich: auth, acc, loc, lcr, radius, etc. JAVA: General Purpose Language SipServlet: SIP (& HTTP) Protocl Programming with Servlets J2EE: Business Logic programming Environment.

12. WeSIP OpenSER Integration WeSIP – OpenSER Integration

13. OpenSER DSL 1- Authenticate 2-Account 3-UsrLoc 4-Nat Traversal . . N-Invoke App-Server WeSIP OpenSER Integration

14. SIP SERVLET JAVA API!! JUST LIKE SIP INHERITS PART OF ITS BEHAVIOUR FROM HTTP, SIP SERVLET PROGRAMMING IS SIMILAR TO HTTP SERVLET PROGRAMMING DEFINED IN JAVA COMMUNITY STANDARD JSR116 NEW VERSION 1.1 DEFINED IN JSR289 COMING SOON

15. SIP SERVLET PROGRAMMING MODEL SIP SERVLET APPLICATIONS CONSIST OF SERVLETS RUNNING INSIDE A SERVLET CONTAINER

16. SIP SERVLET PROGRAMMING MODEL SERVLETS ARE WRITTEN IN JAVA AND TRIGGERED UPON RECEPTION OF REQUESTS AND RESPONSES

17. SIP SERVLET PROGRAMMING MODEL SERVLETS ARE WRITTEN BY THE PROGRAMMER TO IMPLEMENT BUSINESS LOGIC WITH LOW PROTOCOL KNOWLEDGE REQUIRED PROGRAMMERS USE CONTAINER RESOURCES SIP Resources Message creation reception and delivery Transaction Managemet Dialog Management Parallel/Sequential Proxying J2EE JNDI Resources Database Pooling Resource references Environment entries

18. WeSIP site WWW.WESIP.EU Download (Free for non-commercial uses) Tutorial Sample Applications

19. THANK YOU Thanks for your time!!! More questions ?? [email_address]