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ccitt
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1992
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1991-12-11
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OCR:
ot! CCTT 49160 R. Incoming R2 Incoming 6uiobiro register register Incoming exchange transit register exchange national internat register tional terminal or R2 transit chonge FIGURE 1 Principle of end-to-end R2 interregistcr signalling 11105 Ircoming Outgoing international interregister