The ornamental design for a telephonesetbase, substantially as shown and described.
The attached drawing FIGURE is a left side, upper face surface, and front
end perspective view of a telephone set base showing our new design. The
undisclosed rear end surface is substantially similar to the front end
surface. The undisclosed right side surface is flat, without identation,
and is similar in peripheral outline to the left side. The bottom surface
is flat, unbroken and is substantially parallel to the rearward plane of
the upper surface as shown in the drawing.