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� Home : ITU-T : Publications : Recommendations : O�Series : O.25 : O.25 (11/88)
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O.25�:�Semiautomatic in-circuit echo suppressor testing system (ESTS) �

Recommendation O.25 (11/88)

Approved in 1988-11-25

Status : Withdrawn

Deleted after its content became technically out of date
No Document currently available

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