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R.21 : 9600 bit/s modem standardized for use in the telegraph TDM system

Recommendation R.21 (08/96)

Approved in 1996-08

Status : In force

 

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PDF Document PDF (acrobat)

105358 bytes 1997-03-13 E 9643 
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PDF Document PDF (acrobat)

112264 bytes 1997-03-13 S 9645 
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PDF Document PDF (acrobat)

114250 bytes 1997-03-13 F 9644 

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Updated : 2003/07/22