Thanks to David McCudden for submitting the images to The Subchaser Archives.
The 110' submarine chasers were among the first USN vessels to be fitted with radio telephones. The set used in 1918 on the chasers was manufactured by Western Electric. This is the CW 928 component of that set, the switchboard.
Front panel, CW 928 Switchboard
Front panel, CW 928 Switchboard
Internal components, CW 928 Switchboard.