- National and international situation regarding measures implemented to guarantee tariff transparency, 2004 https://www.anacom.pt/render.jsp?categoryId=112539
- I - Introduction
- II - Methodology
- III - Number portability in the context of the mobile network
- IV - Number portability in the context of fixed telephone service (FTS)
- Annex A - Mobile number portability questionnaire (Word - 242 Kb)
- Annex B - Number portability for fixed telephone service (Word - 174 Kb)
