We claim the ornamental design for a gateway terminal, as shown and described.
FIG. 1 is a perspective view of a gateway terminal showing our new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left-side elevation view thereof;
FIG. 5 is a right-side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is another perspective view in an alternate position.
The bottom-most broken line immediately adjacent the claim, in FIGS. 2, 3, 4, 5, and 7 represents the bounds of the claimed design while the broken line in the FIG. 3 view is directed to environment and is for illustrative purposes only; the broken lines form no part of the claimed design.