For Paul Sermon, "the line-out feed is the richest source of documentation" (see conversation with the artist), and in fact these images can be seen as visual representations of the artwork. In addition, traces of the variations in the technical framework are inscribed in the line-out recordings. A sample of frames from different line-out recordings gives an impression of this valuable source material.
Overview of the major variations in the technical framework since 1993:
Numbers indicate the different versions of certain components of the framework. X marks the absence of features.
: At least five different types of sofas have been in use, with respect to shape and upholstery (to date, 3 different types of sofas have been installed at the Museum of Communication).
: Rear-projection monitors (1) have been used at the Museum of Communication for 12 years. Replacement by CRT monitors (2) in 2010.
: CRT monitors (1) and LCD flat screens (2) have been in use; CRT monitors are currently in use at the Museum of Communication.
: Three types of cameras have been in use: DV cameras (1), video-conference cameras (2), and CCTV cameras (3).
Video-conference system with ISDN
: Used for remote locations until 2002 at the Museum of Communication.
Local BNC network
: Used since 2003 at the Museum of Communication.
: Since 2003, only one video mixer (instead of two) has been used for the chroma key effect (once the background images were abandoned).
for subtitles: The interactive version with remote control was used only in the initial presentations (1); later, subtitles merged with pre-recorded background images (2).
, background image: The interactive version with remote control (1) and the version with pre-recorded still images (2) were abandoned after the 1998 presentation at the Museum of Communication.