Prior notice requirement: submit notice via common portal before excavation; licensee must disclose infrastructure and precautions, or excavation may proceed. Any person exercising a legal right to dig or excavate likely to affect telegraph infrastructure must submit a notice via the designated common portal containing identity, contact, timing, location and purpose. The licensee must promptly disclose relevant telegraph infrastructure details and precautionary measures through the portal; the excavator must follow those measures. If no licensee provides required details within the prescribed time, the excavator may proceed. Damages caused to duly placed telegraph infrastructure attract liability in the form of damage charges computed on restoration expenses.