The design consists of the features of shape, ornament, pattern and configuration of the TELEPHONE APPARATUS shown in solid lines in the attached drawing(s) wherein the portions shown in stippled lines do not form part of the design.FIG. 1 is a top, front and right side perspective view of the design;FIG. 2 is a front view thereof;FIG. 3 is a rear view thereof;FIG. 4 is a right side view thereof;FIG. 5 is a left side view thereof;FIG. 6 is a top view thereof; andFIG. 7 is a bottom view thereof.