The Charing Cross and Westminster Interactive Television Network.

ABSTRACT The introduction of a closed‐circuit interactive television system into a medical school teaching on several sites is described. Communication is by means of optical fibre and line‐of‐sight microwave. The system permits the use of a wide range of visual material in lectures delivered from any site to any combination of the others with interaction in sound and vision between the lecturer and his audiences. A detailed evaluation of the technical performance of the system and of its suitability for the teaching of clinical medicine was carried out. The conclusions of the evaluation were that it was technically satisfactory and that it was acceptable to a majority of the teachers and students