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BSI Group, 10/22/1973
Publisher: BS
File Format: PDF
$125.00$251.46
Published:22/10/1973
Note:This product is unavailable in Ukraine, Russia, Belarus
Essential requirements for terminal equipment intended for connection to digital leased circuits of the public telecommunications network using a CCITT Recommendation X.21bis interface
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Rule of procedure 14. Quality assessment procedures-Qualification approval of electronic components
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