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� Home : ITU-T : Publications : Recommendations : I�Series : I.253.3
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I.253.3�:�Call completion supplementary services : Completion of calls to busy subscribers �

Recommendation I.253.3

In force components
Number
 Title Status
I.253.3 (07/96)
� 		Call completion supplementary services : Completion of calls to busy subscribers � In force

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