At least once every 24 hours, each LEC owning, operating, or maintaining any portion of any dedicated 9-1-1 circuit shall manually test, for continuity, the portion of the 9-1-1 circuit that it owns, operates, or maintains. This section does not apply to any dedicated 9-1-1 circuit satisfying any of the following conditions:
65- 625 C.M.R. ch. 2, § 5