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I.520�:�General arrangements for network interworking between ISDNs �

Recommendation I.520

In force components
Number
 Title Status
I.520 (03/93)
� 		General arrangements for network interworking between ISDNs � In force
�
�
Superseded and Withdrawn components
Number
 Title Status
I.520 (11/88)
� 		General arrangements for network interworking between ISDNs � Superseded

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