Increases in the cost of travel together with projected decreases in the cost of long distance telephone calls indicate that economy in consultation can be increased by a shift to more telephone consultation in the future. This may be difficult and awkward for researchers if consultation involves looking at computer output, particularly in an interactive mode. This might be solved if both parties had a terminal. A test of the technical feasibility of such a conference was made. It indicated that on-line consultation is technically feasible and appears to be easy with the APL software system. Several different types of consultation sessions are described. (Author)