The ornamental design for a telephone, as shown and described.
FIG. 1 is a front perspective view of the design for the telephone having a number of environmental features, namely, a plurality of buttons, and a display, the contour and the inclusion of these environmental features being optional with respect to the design of the telephone;
FIG. 2 is a top view of the telephone of FIG. 1, illustrating the environmental buttons and display;
FIG. 3 is a left side view of the telephone of FIG. 1; and,
FIG. 4 is a top perspective view of a base portion of the telephone of FIG. 1.
The broken lines provided in the above views are used to indicate environmental structures and form no part of the claimed design.