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U.12 : Terminal and transit control signalling system for telex and similar services on international circuits (type D signalling)  

Recommendation U.12 (03/93)

Approved in 1993-03-01

Status : In force

 

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PDF Document PDF (acrobat)

210226 bytes 1994-11-23 E 5184 
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224037 bytes 1994-11-23 S 5269 
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227150 bytes 1994-11-23 F 5234 

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328601 bytes 1994-11-23 E 5184  Download
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353012 bytes 1994-11-23 F 5234  Download

 

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Updated : 2003/07/22