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Standard ECMA-309
Corporate Telecommunication Networks - Signalling Interworking between QSIG and H.323 - Call Diversion Supplementary Services

2nd edition (June 2001)

The latest edition of this Ecma Standard is available here.

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

File name Content
ECMA-309 1st edition Acrobat (r) PDF file

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