FIG. 1 is a top, front and right side perspective view of a telephone handset showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation thereof;

FIG. 5 is a rear elevation thereof;

FIG. 6 is a left side elevation thereof; and,

FIG. 7 is a right side elevation thereof.

The broken line showings throughout the views are for illustrative purposes only and form no part of the claimed design.