Folks, I'm trying to find the specs for an audio transformer. The transformer is used with an Executone Phone system that's being utilized as an elevator intercom for a large 4 building complex, installed circa 1990. The transformer is used in two places, between the speaker and a Valcom 2900 intercom located in the elevator cab, and in conjunction with a Valcom 1109 Zone paging unit for all-zone paging to the cabs.

The transformer pt # is A-2225, a web serch produced no results. Is anyone familiar with this transformer and how it's used in the Executone/Valcom application?

Regards, Jim