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� Home : ITU-T : Publications : Recommendations : F�Series : F.921 : F.921 (03/17)
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F.921�:�Audio-based network navigation system for persons with vision impairment �

Recommendation F.921 (03/17)

Approved in 2017-03-01

Status : Superseded

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Summary

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430205 bytes 2017-03-29 E�41336�

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