This document discusses SWOT analysis for call centers in Bangladesh, identifying strengths such as abundant and cheaper labor, as well as weaknesses like higher infrastructure costs. It also outlines opportunities in the large global market and threats such as potential legislation against outsourcing. Next, it describes how internet service providers can offer voice services by better utilizing existing IP infrastructure for calling cards. It provides an overview of value-added services like internet call waiting and virtual second phone lines. Finally, it discusses convergence of voice and data networks in enterprises and benefits like reduced costs and increased flexibility.