20. Establishing, maintaining or working unauthorised telegraph
20A. Breach of condition of license
21. Using unauthorised telegraphs
23. Intrusion into signal-room, trespass in telegraph office or obstruction
24. Unlawfully attempting to learn contents of messages
25. Intentionally damaging or tampering with telegraphs
25A. Injury to or interference with a telegraph line or post
27. Telegraph officer fraudulently sending messages without payment
29. Sending fabricated or obscene messages