This paper describes a services-on-demand (SoD) laboratory demonstrato
r with personal computer (PC)-based set-top boxes (STBs). The implemen
tation is part of a research project of Deutsche Telekom's Technology
Centre, whose aim is the verification and demonstration of the general
concept to use the German public online service ''T-Online'' with Int
ernet access as a platform for SoD, The laboratory demonstrator extend
s the T-Online system by broadband downstream connections between the
content sewer and the customers. Authentication, billing, and navigati
on through the SoD content are provided by the existing T-Online infra
structure. Based on a first step configuration with two example applic
ations, a first performance analysis has been made.