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  Home : ITU-T : Publications : Recommendations : I Series : I.253.1 : I.253.1 (11/88)
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I.253.1 : Call completion supplementary services : Call waiting

Recommendation I.253.1 (11/88)

Approved in 1988-11-25

Status : Superseded

No Document currently available

 

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Updated : 2011.03.14