Diapositiva 1

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SIP APPLICATION SERVERS WeSIP
SIP APPLICATIONS SERVERS AND WeSIP FOR
OpenSER BERLIN 8-11-2006
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SIP APPLICATION WHAT ???
SIP APPLICATION WHAT ???
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SIP APPLICATION SERVERS
What is a SIP Application Server ?

• A network entity that speaks SIP
• AND IS PROGRAMMABLE !!!

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Technologies - CPL

• CPL http//www.ietf.org/rfc/rfc3880.html
• CPL stands for CALL PROCESSING LANGUAGE
• XML call behaviour scripting
• Protocol Agnostic
• Loaded and executed in a container
• Allows basic (non interactive) predefined
  modification of call behaviour based on time
  criteria, address criteria or network signalling
  criteria
• With CPL you can do things like forward all my
  calls to voicemail if Im not available, the
  caller is my girlfriend and is Friday
• OpenSER provides CPL implementation module

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Technologies SIP CGI

• SIP CGI http//www.ietf.org/rfc/rfc3050.txt
• Defines a communication channel between the SIP
  server and the application scripts.
• Applications scripts (CGIs) can be written in
  any language.
• Similar in spirit to the invocation of external
  applications in OpenSER via 'exec' module

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Technologies OTHERS

• CCXML - Call Control XML
• Scriptable, XML based
• Protocol agnostic
• Supports variables and dynamic script retrieval
• Jain SLEE Service Logic Execution
  Environment
• Protocol Agnostic
• Event driven
• Applications defined as a composition of
  components

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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

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SIP SERVLET PROGRAMMING MODEL

• SIP SERVLET APPLICATIONS CONSIST OF SERVLETS
  RUNNING INSIDE A SERVLET CONTAINER

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SIP SERVLET PROGRAMMING MODEL

• SERVLETS ARE WRITTEN IN JAVA AND TRIGGERED UPON
  RECEPTION OF REQUESTS AND RESPONSES

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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

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SIP SERVLET PROGRAMMING MODEL

• MANY CONTAINERS SUPPORT CONVERGENCE
• APPLICATIONS HANDLE SIP AND HTTP MESSAGES
• HTTP SESSIONS CAN SEE/INTERACT WITH SIP SESSIONS
  AND VICEVERSA

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WeSIP
WHAT IS WeSIP ??
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WeSIP
WeSIP is a Converged SIP Servlet Application
Server built on top of OpenSER
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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 integrateOpenSER with other
  systems and protocolsenabling the offerof a
  new set services

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WeSIP OpenSER Integration
WeSIP OpenSER Integration
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WeSIP site

• www.wesip.eu
• Download (Free for non-commercial uses)
• Tutorial
• Sample Applications
• WeSIP is patent pending technology

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THANK YOU
Thanks for your time!!! More questions
?? gines.gomez_at_voztele.com