Summary

Recommendation ITU-T E.169.1 details the application of the ITU-T E.164 Numbering Plan for the Universal International Freephone Numbers (UIFN) in the provisioning of International Freephone Service (IFS) as defined in Recommendation ITU-T E.152. It has been amended and refined in the light of experience gained by service providers and the UIFN Registrar since the inauguration of the UIFN in early 1997.

This Recommendation was previously numbered ITU-T E.169. It has been renumbered as ITU‑T E.169.1, and forms part of the ITU-T 169.x-series Recommendations describing the numbering plans and assignment procedures for various international services.