Mlx-28D Telephone - AT&T MERLIN LEGEND System Reference Manual

Hardware
A list of features specific to each telephone model in the MLX family follows.
can be used as a DLC system operator console
Model MLX-28D
28 line and feature buttons
display (2 lines x 24 characters)
8 display-associated buttons
accommodates one or two Direct Station Selectors (DSSs)
Figure 5-6

MLX-28D Telephone

Telephones and Consoles 5-11