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Q.310-Q.332�:�Specifications of Signalling System R1 �

Recommendation Q.310-Q.332

In force components
Number
 Title Status
Q.310-Q.332 (11/88)
� 		Specifications of Signalling System R1 �
Initially published in Blue Book Fascicle VI.4 (1988). Available now in electronic format only 		In force

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