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Q.621 : Logic procedures for outgoing signalling system No. 4

Recommendation Q.621 (11/88)

Approved in 1988-11

Status : In force


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PDF Document PDF (acrobat)

146741 bytes 1989-09-28 E 12638 
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PDF Document PDF (acrobat)

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PDF Document PDF (acrobat)

164003 bytes 1989-09-28 F 12638 

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Updated : 2001/09/10