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Q.553 : Transmission characteristics at 4-wire analogue interfaces of digital exchanges

Recommendation Q.553 (11/01)

Approved in 2001-11-01

Status : In force

 

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Summary

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PDF Document PDF (acrobat)

177181 bytes 2002-05-29 E 21585 
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198656 bytes 2002-05-29 E 21585  Download
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Updated : 2003/07/23