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Edition 1998-09-01

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Edition 1998-10-01

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Edition 2001-11-01

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Edition 2000-03-01

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Edition 2000-12-01

Integrated Services Digital Network (ISDN) - Signalling System No.7 (SS7) - ISDN User Part (ISUP) - Enhancements for support of Number Portability (NP) [ITU-T Recommendation Q.769.1 (2000), modified]
Edition 2000-12-01

TIA/EIA-41-D Enhancements for Wireless Number Portability Phase II
Edition 2002-01

TIA/EIA-41-D Enhancements for Wireless Number Portability - Phase II Addendum 1
Edition 2002-09

IEEE Guide for Cloud Portability and Interoperability Profiles (CPIP)
Edition 2020

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Edition 2019-03-18