May have answered my own question with a Google search:
In 1988, Valcom was awarded a contract to manufacture and test the KY-57 installation kits and cable assemblies to provide spares for the Vinson system. The kits consisted of cable assemblies, adapters, junction boxes, speakers, amplifiers and mounting brackets.
To effectively test the production quantities, it was necessary for Valcom to design and build a special computerized test jig. This test jig is capable of automatically testing a wide variety of cables and interconnecting boxes to a high degree of accuracy, after which, the results are printed. The tester is still in use in the repair and overhaul department for testing repaired items.
These kits were manufactured for the Department of National Defence (DND) through Supply and Services Canada.
Looks like it was most likely the NESTOR
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