FIG. 1 is a perspective view of a telephone base showing my design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines that show the outermost periphery of non-claimed features represent the boundaries of the claimed design while all other broken lines are directed to environment and are for illustrative purposes only; the broken lines and unshaded portions of the telephone base form no part of the claimed design.