TY - SER AU - Boudriga, Nuoureddine AU - Obaidat, Mohammad S. AU - Guemara-El Fatmi, Siham TI - Multiple connections in data communication and advanced applications KW - SESSION LAYER KW - NESTED SESSION KW - SESSION MODEL KW - ADVANCED APPLICATIONS KW - INTERSESSION DEPENDENCY CONSTRAINTS KW - QUALITY OF SERVICE CONSTRAINTS N1 - In this paper we define new concepts that extend the traditional notion of session in layered architectures, and we study how they can cope with the new requirements that advanced applications may need. Second, we define a logic-based model that allows the description and the reasoning about nested sessions. Finally, we show the modification imposed on the session layer in order to manage nested sessions ER -