Developm ent of convergent J2 EE applications for OpenSER Elias - - PowerPoint PPT Presentation

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Dec 26, 2022 186 likes •375 views

Developm ent of convergent J2 EE applications for OpenSER Elias Baixas Morat Engineer VozTelecom Sistemas Development of convergent J2EE applications for OpenSER SIP is a difficult protocol (you know what I mean ?) Have you ever received a

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Developm ent of convergent J2 EE applications for OpenSER

Elias Baixas Morató Engineer VozTelecom Sistemas

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Development of convergent J2EE applications for OpenSER

SIP is a difficult protocol (you know what I mean ?)

Have you ever received a CANCEL while parallel forking with a final success response already sent upstream ? (let me think...)

IP Telephony is a difficult issue

LCR, auth, accounting, locating users...

SIP Applications are cool, but if you try to face everything at

nce, you end up with a big and beautiful mess.

“Divide and Conquer” always works.

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OpenSER Low level, telephony-related functions:

Call Routing (LCR)
Access Control (ACL, Auth,etc.)
Accounting (Radius,Diameter)
Nat Traversal
UsrLoc
Etc...

usrs

Annoying (no! you're not!)

Development of convergent J2EE applications for OpenSER

Business Logic Business Processes (Oracle PL/SQL ? J2EE ? EJB ?)

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Development of convergent J2EE applications for OpenSER

OpenSER script: Domain Specific Language (DSL)

Hyper efficient Call handling Feature-rich: auth, acc, loc, lcr, radius, etc. Extensible through modules Robust

How do I integrate OpenSER into my business processes ?

Of course: Databases (MySQL), maybe “exec” module, XML-RPC ?

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Development of convergent J2EE applications for OpenSER I Want Business Logic, Model-Viewer-Controller, AJAX, Web 2.0, Servlet, J2EE, EJB integrated with OpenSER !

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You Have WeSIP !!!

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Development of convergent J2EE applications for OpenSER

OpenSER SIP HTTP WeSIP J2EE environment (EJBs, Servlet, JNDI, JMX, JMS, etc) usrs Low level, telephony- related functions:

Call Routing (LCR)
Access Control (ACL,

Auth,etc.)

Accounting (Radius)
Nat Traversal
UsrLoc
Etc...

Application Logic B2BUA

Web or SIP triggered

PBX functionality (JAVA APIs) Trigger IVR Trigger Media Services Intelligent call routing Business Logic

Provisioning
Invoking thrid

party services

Billing
(Accounting)
Statistics
...

Annoying (no! you're not!)

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Development of convergent J2EE applications for OpenSER

OpenSER script: Domain Specific Language (DSL)

Hiper efficient Call handling Feature-rich: auth, acc, loc, lcr, radius, etc.

JAVA: General Purpose Language SipServlet: Application Programming Paradigm J2EE: Business Logic programming Environment.

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Development of convergent J2EE applications for OpenSER

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

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Development of convergent J2EE applications for OpenSER

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Development of convergent J2EE applications for OpenSER

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Click2Call example

SipServlet is invoked:

Involves:

2 SipSessions (call-legs) 1 HttpSession (Web user)

Web Technologies

Direct Web Remoting JAVA API AJAX (At last SIP programmers can have their AJAX dose ! : P ) Javascript, CSS, DHTML...

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Click2Call

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Click2Call

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Click2Call

OpenSER I N V I T E I N V I T E SIP HTTP WeSIP RTP B2BUA Click2Call

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Click2Call

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Click2Call

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