G511:1998 1800/13/1300 Number Portability – Network Plan

Specifies agreed network arrangements for the provision of 1800/13/1300 number portability using a central reference database maintained by an ‘Independent body’.

This Guideline was reconfirmed in 2004, 2009, 2014, 2019 and 2024 and the next review is scheduled to occur in 2029.