Subject 444

October 31, 2018

TO: Subscribers to UL’s Performance Verification Services for Local Area Network (LAN) Cable Verified in Accordance With National or International Specifications (DVBI)

SUBJECT: Revised Testing and Follow-Up Service Requirements for UL’s LAN Performance Verification Programs

This bulletin will serve as the testing and Follow-Up Service reference document for all of UL’s LAN Performance Verification Programs and replaces UL’s July 20, 2016 Bulletin on the same subject. This bulletin will be updated as needed, when new or revised requirements are introduced into UL’s LAN Performance Verification Programs.
This bulletin can be accessed at:


Subject 444 DVBI Bulletin