Private branch exchange

Description

FIG. 1 is a top perspective view of a private branch exchange of the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a first side view thereof;

FIG. 4 is a second side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a rear view thereof.

A private branch exchange, or PBX, is a telephone switch for offices, for example.

The broken lines immediately adjacent the shaded areas, which define the unshaded regions, represent the bounds of the claimed design. All other broken lines are directed to environment and are for illustrative purposes only. The broken lines and unshaded regions within the broken lines form no part of the claimed design.

Claims

I claim the ornamental design for a private branch exchange, as shown and described.