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Applications Development with OSA/PARLAY in Brazil. Norberto Alves Ferreira. Mar/2006. Contents. CPqD Overview and Background Software Development for NGN (Next Generation Network) in CPqD SIP Architecture Parlay Architecture Conclusions. CPqD Overview.

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Applications Development with OSA/PARLAY

in Brazil

Norberto Alves Ferreira

Mar/2006


Contents

  • CPqD Overview and Background

  • Software Development for NGN (Next Generation Network) in CPqD

    • SIP Architecture

    • Parlay Architecture

  • Conclusions


  • CPqD Overview

    • 30 years of experience in the Telecom Industry

    • Private foundation, not for profit

    • Solutions provider for the top companies in the Brazilian market

    • BOSS (Business and Operations Support Systems) provider for all incumbent Operating Companies in Brazil

    • Contracted by Telecom Industry leaders for R&D


    CPqD Overview

    BUSINESS AND OPERATIONS SUPPORT SYSTEMS

    TELECOMMUNICATION

    NETWORKS

    SERVICES AND

    APPLICATIONS

    WIRELESS

    COMMUNICATIONS

    OPTICAL

    COMMUNICATIONS

    NETWORK INFRASTRUCTURE

    BUSINESS

    INTELLIGENCE


    CPqD Background

    • Intelligent Networks – first deployment in Brazil in mid-90s.

    • Service Development Laboratory

      • Service modeling & specification

      • Service development

      • Tests

    • National Standard: ETSI CS1-based INAP-BR.


    CPqD Background

    • SW-CMM (Capability Maturity Model for Software) level 2 certified.

      • CMMi (Capability Maturity Model Integration) level 3 is being pursued by mid-2006.

    • GSAM (Multimedia Services and Applications Management) uses RUP (Rational Unified Process) for software development.


    Contents

    • CPqD Overview and Background

    • Software Development for NGN (Next Generation Network) in CPqD

      • SIP Architecture

      • Parlay Architecture

  • Conclusions


  • App Server

    IP Network

    SIP *

    element

    Software Development for NGN (SIP)

    Data

    Base

    SIP

    Media

    Server

    Voice

    Mail

    SIP

    * Softswitch

    * Signaling Server

    * Proxy Server


    Software Development for NGN (SIP)

    • CPqD has been developing applications using SIP

      APIs since the beginning of 2002.

    • Since 2002, CPqD has developed several applications like:

      • CPqD - Freephone

      • CPqD – EasyVoIP


    Software Development for NGN (SIP)

    • General Comments

    • The API requires knowledge of the specification of the SIP protocol to develop a service.

    • The SIP architecture provides only one interface to the telecommunications network. It doesn‘t provide a standard interface to all telecommunications network simultaneously.

    • The SIP architecture provides a poor interface with each network elements. It requires to increment this interface which results in a dependency of the network element’s suppliers.


    Contents

    • CPqD Overview and Background

    • Software Development for NGN (Next Generation Network) in CPqD

      • SIP Architecture

      • Parlay Architecture

  • Conclusions


  • App Server

    Parlay

    Gateway

    PSTN

    Mobile

    IP

    Software Development for NGN (Parlay)

    Parlay API´s


    Software Development for NGN (Parlay)

    • CPqD has been studying the Parlay concepts since 2001.

    • Analysis and demo tests of application servers and parlay gateway simulators from different vendors were performed, with the idea of building a development and test laboratory.

    • In 2003, CPqD deployed its first Parlay application for use in a trial for one of the most important fixed telecom operators in Brazil.


    Software Development for NGN (Parlay)

    • The application's goal was:

      • To test the gateway implementation of the MultiPartyCallControl APIs through a prototype built by CPqD.

    • The main features of the application developed to test the MPCC (MultiPartyCallControl) API were :

      • The calls were created and controlled through a web interface

      • Any number of additional call legs could be created

      • The call could be scheduled

      • Simultaneous calls could be made – once one answers, the others would be cancelled.


    Software Development for NGN (Parlay)


    Requirements Specification

    Design Model

    Code

    Validated

    Code

    Software Development for NGN (Parlay)


    App Server

    INAP CS1+

    SIP

    Test Environment

    Software Development for NGN (Parlay)

    IP Network

    Web access

    Parlay GW1

    Parlay GW2

    Softswitch

    IN SSP


    Software Development for NGN (Parlay)

    • Learned Lessons

    • The trial involved three different players:

      • The Parlay Gateway supplier

      • The Application Server supplier

      • The Application developer

    • The interaction between those players was productive and smooth.

    • The application, tested by means of a Parlay Gateway simulator, had the same behavior in the real environment, with the Parlay Gateway being from a different vendor than that of the simulator.

    • The same application can be used in all platforms that support the MultiPartyCallControl API.

    • The Parlay APIs became this complex application development easier and faster


    Experience in Chile

    Software Development for NGN (Parlay)

    • CPqD worked together with a partner to create an application for a trial in a Chilean fixed and mobile operator.

      • Application Description

        • A voice conferencing was developed, using the service creation environment from CPqD’s partner.

        • The application had several features for conferencing, such as a web interface for administration, moderation and notification by e-mail.

      • Results

        • The application was installed and running in less than one week.

        • Integration between gateway and application server ocurred smoothly.

        • This application had a high degree of complexity, but even so it was developed in a relatively short period of time (2 months)


    Contents

    • CPqD Overview and Background

    • Software Development for NGN (Next Generation Network) in CPqD

      • SIP Architecture

      • Parlay Architecture

  • Conclusions


  • Conclusions

    • Developer´s Point of View


    Conclusions

    • Client´s Point of View


    Conclusions

    • The Parlay architecture provides an interface to all telecommunications network.

    • This interface allows to create a standard API for services development.

    • The simplicity of this standard results in its easy dissemination.


    THANK YOU!

    CPqD – Centro de

    Pesquisa e Desenvolvimento

    em Telecomunicações

    Rod. Campinas–Mogi-Mirim, km 118,5 – SP340

    13086-902 – Campinas – SP

    BRASIL

    www.cpqd.com.br

    Norberto Alves Ferreira

    norb@cpqd.com.br

    Phone: +55 (19) 3705.6406

    CPqD Technologies & Systems, Inc.

    101 NE Third Ave – Suite 1500Fort Lauderdale, FL 33301, USA

    www.cpqdusa.com


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