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ITU-T E.164 Suppl. 2 (11/2009)

Number portability

Supplement 2 to Recommendation ITU-T E.164 defines standard terminology for a common understanding of the different aspects of number portability within an E.164 numbering scheme. It identifies numbering and addressing formats, call flows, network architectures and routing approaches that will provide alternative methods of implementation. It also proposes some examples of the administrative and operational processes required for the successful implementation of number portability.

Citation:	https://handle.itu.int/11.1002/1000/10690
Series title:
Approval date:	2009-11-24
Approval process:	Agreed
Status:	Superseded
Maintenance responsibility:	ITU-T Study Group 2
Further details:	Patent statement(s) Development history

Ed.	ITU-T Recommendation	Status	Summary	Table of Contents	Download
6.9	E.164 Suppl. 6 (03/2012)	In force	here	here	here
6.8	E.164 Suppl. 5 (11/2009)	In force	here	here	here
6.7	E.164 (2010) Amd. 1 (06/2011)	In force	here	-	here
6.6	E.164 Suppl. 4 (2004) Amd. 1 (11/2009)	In force	here	-	here
6.5	E.164 Suppl. 4 (05/2004)	In force	here	here	here
6.4	E.164 Suppl. 3 (2004) Amd. 1 (11/2009)	In force	here	-	here
6.3	E.164 Suppl. 3 (05/2004)	In force	here	here	here
6.2	E.164 Suppl. 2 (06/2020)	In force	here	here	here
6.1	E.164 Suppl. 1 (03/1998)	In force	-	here	here
6	E.164 (11/2010)	In force	here	here	here
5.4	E.164 Suppl. 2 (06/2014)	Superseded	here	here	here
5.3	E.164 Suppl. 5 (05/2008)	Superseded	here	here	here
5.2	E.164 Suppl. 2 (03/2012)	Superseded	here	here	here
5.1	E.164 Suppl. 2 (11/2009)	Superseded	here	here	here
5	E.164 (02/2005)	Superseded	here	here	here
4.3	E.164 Suppl. 4 (05/2003)	Superseded	here	here	here
4.2	E.164 Suppl. 3 (05/2002)	Superseded	here	here	here
4.1	E.164 Suppl. 2 (11/1998)	Superseded	-	here	here
4	E.164 (05/1997)	Superseded	here	here	here
3	E.164/I.331 (08/1991)	Superseded	-	here	here
2	E.164/I.331/Q.11 bis (11/1988)	Superseded	-	here	here
1	E.164/I.331 (10/1984)	Superseded	-	-	Not available

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ITU-T Recommendations

ITU-T E.164 Suppl. 2 (11/2009)