lephone calls is transported as IP packets within Internet. Major forces are changing the scene for enterprises There are some major market trends that are now having a great impact on business operations and consequently the type of applications and communication needed. These trends are themselves spurred by the worldwide Internet and mobile communication, also called 'mobile Internet'. In principle, any person or any database-stored information can be reached independent of time and geographical position. Globalization Most enterprises are today working in a global environment, with suppliers and/or cus- tomers in other countries; in some cases the company itself becomes a global entity, directly or with partners in an international cluster. Restructuring, Outsourcing and 'Clustering' Increased competition forces enterprises to focus on their 'core business'. On top of this we see the drive to keep capital costs low with 'just-in-time' logistics strategies. This creates many more intercompany connection points, with an increased need for quick, efficient, reliable and information-heavy communication, between people and between systems. End-User Needs and Demands Towards Knowledge-Based Organizations As the educational level of employees increases and the decision making become more distributed and delegated, internal communications within enterprises increases in strate- gic importance. Companies are putting more efforts in keeping their people up to date with on-line conferences, web-casting, internal TV-channels, newsletters, multi-location workshops and other means. To address the three forces mentioned above (globalization, restructuring and new types of organizations), enterprises need effective communication solutions that support individ- ual productivity and their interaction with customers and business partners. Increased and improved person-to-person communication capabilities are a key success factor for this development. For further increased individual productivity, employees require local and wid