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� Home : ITU-T : Publications : Recommendations : O�Series : O.51 : O.51 (11/88)
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Recommendation O.51 (11/88)

Approved in 1988-11-01

Status : Withdrawn

O.51 was an alias name of ITU-T P.52. Only this alias name was suppressed. ITU-T P.52 remains valid
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