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Standard ECMA-163
Private Integrated Services Network (PISN) - Specification, Functional Model and Information Flows - Name Identification Supplementary Services (NISD)

3rd edition (September 1997)

The latest edition of this Ecma Standard is available here.

You can download the previous replaced "historical" editions of this Ecma Standard, free of charge:

File name Content
ECMA-163 1st edition Acrobat (r) PDF file
ECMA-163 2nd edition Acrobat (r) PDF file

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