Test-Um Inc. is a world-class designer and manufacturer of top-quality products for Testing, Talking and Tracing in the datacom, telecom and alarm/security field…Test-Um Inc. is a world-class designer and manufacturer of top-quality products for Testing, Talking and Tracing in the datacom, telecom and alarm/security fields. TestPath is the authorized source for all Test-Um test accessories.We STOCK all Test-Um test accessories -- even the hard-to-find ones.From belt-clips, test adapters and remote terminators to cases and cord sets, we can ship Test-Um datacom, telecom or security test accessories the same day you order them.