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50![INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU](https://www.pdfsearch.io/img/cf25311d8195b559a19171c3d9ddff23.jpg) | Add to Reading ListSource URL: www.itu.intLanguage: English - Date: 2001-09-25 08:37:28
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