The aim of this thesis is to install and to configure three Open source PBXes Asterisk, Freeswitch and YATE. Furthermore, the aim is to realize the performance test and stability tests on three different HW configurations with the tester Spirent Abacus 5000. The scripts in bash were created to monitor PBX performance. Another part of the study is to analyze and to compare PBX security and to compare the Open Source PBX with a proprietary PBX Alcatel-Lucent OXE.

Continuous information technology development changed traditional ways of management and business operations. Nowadays there is a high demand for new innovative business solutions and the ways of managing people that enables to fully elicit their potential. Physical boundaries are removed; work is becoming incredibly dispersed around the world enabling growth of 24/7 customer service, home banking, online shopping and other services that were seemed incredible just a few years ago. In this fast paced environment the companies are seeking for any possibility to increase their competitiveness. Implementing flexible working is considered by most of organizations as a tool to adapt to never-ending changes. This paper aims to test the hypothesis that flexible working increases organizational productivity from the perspective of the property as well as from the perspective of employees. In current work organizational productivity from the perspective of property is analyzed from economic standpoint when flexible working decreases operational and real estate costs per employee, thus, allowing saving and investing in other business areas that would increases profitability of the company. Productivity from staff perspective is measured by employee's satisfaction of his working environment, work-life balance, and increased efficiency through team collaboration, flexible hours and telecommuting. Methodology used is case study and literature review. Case study was performed on-site in Alcatel-Lucent in Singapore. It is limited to six months from planned full year of 3 implementation project. Set of interviews with company managers was conducted to support the case results. The thesis suggests the hypothesis, according to the literature review and overview of some cases in different countries, that flexibility in property as well as in working mode increases productivity both in terms of real estate costs savings and in terms of employee’s increased productivity due to better team collaboration in open space, flexible working hours, ability to choose preferred location for work, telecommuting that creates a positive work-life balance. The case study performed for this paper in Alcatel-Lucent Singapore shows that the aforementioned benefits are not there yet due to the project timeline but are highly anticipated by local and global management. Nevertheless, thorough assessment of business requirements and the needs of employees should be undertaken before deciding on flexible working. It is extremely crucial to secure efficient and open internal communication and employees’ involvement in all stages of the project in order to achieve fast acceptance and adaptation to new environment. Based on the current example, future research suggests investigating in cultural aspect of global strategy deployment by corporate decision in different countries.

[pt] Inovação e dinamismo são as palavras que definem o mercado das telecomunicações nos últimos 15 anos. O modo como as pessoas se comunicam, a velocidade da transmissão de dados e a diversidade de serviços oferecidos são tão voláteis que exigem constantemente que as empresas atuantes revisitem seus planejamentos estratégicos e suas estratégias globais para se manterem competitivas. O presente trabalho tem como objetivo contribuir para os estudos sobre gestão estratégica de empresas provedoras de equipamentos e serviços de telecomunicações que atuam globalmente, analisando, através do método de estudo de caso, a mudança estratégica adotada pela empresa franco-americana Alcatel-Lucent no ano de 2013. O levantamento de dados foi feito através de informações públicas disponíveis nos sites especializados na indústria das telecomunicações, na base de dados Web of Science, em websites de notícias e no website da empresa objeto de estudo, além da aplicação de um questionário estruturado e entrevistas complementares, a fim de capturar as percepções de seus líderes e colaboradores antes e após a adoção da nova estratégia – The Shift Plan. Para a análise estratégica esta pesquisa adotou o arcabouço conceitual GI (genérico integrativo), ferramental que permitiu realizar uma análise da adequação estratégica da empresa numa perspectiva integrativa sistêmica nos dois momentos: Antes e após a adoção do The Shift Plan. Com base nos resultados, a pesquisa evidenciou que a adoção de uma nova estratégia por parte da Alcatel-Lucent era urgente. O estudo nos permite perceber as lacunas existentes na antiga estratégia, e como essas lacunas serão preenchidas e corrigidas na adoção da nova estratégia The Shift. / [en] Innovation and dynamism are the words that have defined the telecommunications market in the last 15 years. The way people communicate, the speed of data transmission and the diversity of services offered are so volatile that companies those plays in this market constantly needs to revisit their planning and global strategies to remain competitive. This dissertation aims to contribute to research on strategic management of network equipment vendors that operate globally, analyzing, through the case study method, the strategic change adopted by the French-American company Alcatel-Lucent in the year 2013. All data collection was done through public information available on websites specializing in the telecommunications industry, in the database Web of Science, on news websites and the website of the study subject company, besides the application of a structured questionnaire and additional interviews in order to capture the perceptions of its leaders and employees before and after the adoption of the new strategy - The Shift Plan. For strategic analysis this study The strategic analysis was conducted with the help of Macedo-Soares s framework GI - Generic Integrative – tool, allowing to do a strategic fit company analysis in a systemic integrative perspective in two phases: before and after the adoption of the new strategy The Shift Plan. Based on the results, the research showed that the adoption of a new strategy by the Alcatel-Lucent was urgent. The study allows us to perceive the gaps in the adequacy of the old strategy and how these gaps were and shall be completed and corrected in the adoption of The Shift Plan through a change.