Presentia Corp.

Home | Experience | Projects | Area: Telecommunications

Virtual numbers system

JetNumbers is a revolutionary system that provides virtual phone numbers (Virtual Phone Numbers) to dozens of countries around the world. Calls to these numbers can be directed to landlines, mobile phones, Skype accounts or PBXs through simple configuration.

Technology

The system is fully developed under an OpenSource platform, using the PHP programming language. All telephony services are provided using Asterisk server, configured with several modules to allow the integration and interaction with other communication platforms and billing systems.

Roles

Presentia has participated in virtually all system development, from the main public web site, to the back-office system implementing several modules and features such as the user control panel, the service administration panel, back-office integration with different payment methods, integration modules for the IP telephony platform, data analysis reports, etc.

In addition to developing and deploying the system we have also provided technical support at the startup phase of this service.

Automating service request processes

This project was developed for one of the most important telecommunications companies in South America which offers more than 40 services (such as local and international telephony, dedicated digital lines, satellite links, ADSL, etc) and boasting several million subscribers.

The project’s scope was to automate requests for new services by defining and implementing processes which would accompany and monitor service orders on their course through the different layers of the organization, interacting with existing legacy systems such as billing, equipment inventories, digital circuit systems, etc. This development project used a workforce of over 200 professionals and the development of most modules was done remotely.

Technology

A three-tiered architecture was implemented following the J2EE standards, using JSP pages and Servlets to develop the front-end, XML for communicating with presentation layer components, Java Beans in the business layer and an Oracle database. The processes were designed and configured using the Inconcert Workflow engine, and the product’s Java API was used to instance and work with the processes necessary to provision the required services.

Roles

Requirement engineering, process design and development of the organization’s platform service which accesses the internal network infrastructure.

Definition and design of the data layer objects used for all services in the entire project.

Coordinating the development team.

Communication and Management Systems

Several internal systems were developed for a national telecommunications company. Some of the most interesting projects undertaken were: a management system for the company’s training and event organization center; building a Web Services platform to inter-communicate several legacy systems which had been previously developed by different companies with varying technologies (RPG, COBOL, Visual Basic, Java, etc.)

Technology

Due to the company’s corporate policies all projects were built using Java with open source servers such as Tomcat and JBoss (when required). The management applications were implemented using multi-tiered web architectures accessing a series of databases (Oracle, MySql, etc.) via JDBC. All Web Services were developed using the latest standards to allow for the interoperability of all systems.

Roles

Design and implementation of the mechanism used in communicating heterogeneous systems.

Design and implementation of internal management systems.