Telephone base unit

FIG. 1 is a top perspective view of a telephone base unit of the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a first side view thereof;

FIG. 5 is a second side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a top perspective view thereof shown in an environment of use.

The broken line around the periphery of the unshaded top surface of the telephone base unit represents a boundary of the claimed design. All other broken lines represent unclaimed environment. The broken lines and unshaded regions within the broken lines form no part of the claimed design.