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Q.400SerSup2 : Both-way working of the analogue line signalling version of Signalling System R2

Recommendation Q.400SerSup2

Superseded and Withdrawn components
Number
Title Status
Q.400SerSup2 (11/88)
 
Both-way working of the analogue line signalling version of Signalling System R2   Superseded

 

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Updated : 2011.05.27