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Standard ECMA-106
Private Telecommunication Networks (PTN) - Signalling Protocol at the S Reference Point - Circuit Mode Basic Services (SSIG-BC)

3rd edition (December 1993)

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-106 1st edition Acrobat (r) PDF file
ECMA-106 2nd edition Acrobat (r) PDF file

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