Electronic and Postal Communications (Electronic Communication Numbering and Addressing) G.N. No. 428 (contd) 12. 13. Changes of Electronic Communication Numbering Cancellation of electronic communication numbers and addresses assignments PART III SIGNALLING POINT CODES 14. 15. 16. National Signalling Point Codes Plan Management Assignment of Signalling Point Codes Signalling Point Codes Assignee obligations PART IV GENERAL PROVISIONS 17. 18. 19. Compliance, offences and Penalty Compounding of offences Revocation 158