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Home : ITU-T : Publications : Recommendations : Q�Series : Q.83.1 : Q.83.1 (11/88)
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Q.83.1�:�Stage 2 description for call completion supplementary services : Call waiting (CW)

Recommendation Q.83.1 (11/88)

Approved in 1988-11-25

Status : Superseded

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Updated :�2011.03.14