FIG. 1 is a top perspective view of a first embodiment 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;

FIG. 8 is a top perspective view of a second embodiment of a telephone base unit of the present invention;

FIG. 9 is a front view thereof;

FIG. 10 is a rear view thereof;

FIG. 11 is a first side view thereof;

FIG. 12 is a second side view thereof;

FIG. 13 is a top view thereof;

FIG. 14 is a bottom view thereof;

FIG. 15 is a top perspective view of a third embodiment of a telephone base unit of the present invention;

FIG. 16 is a front view thereof;

FIG. 17 is a rear view thereof;

FIG. 18 is a first side view thereof;

FIG. 19 is a second side view thereof;

FIG. 20 is a top view thereof; and,

FIG. 21 is a bottom view thereof.

The broken line showing of the telephone base unit is included for the purpose of illustrating environment that forms no part of the claimed design.