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		: Q.2957.1 (02/95) | Recently posted - 
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| Q.2957.1 : Stage 3 description for additional information transfer supplementary services using B-ISDN digital subscriber signalling system No. 2 (DSS2) - Basic call : User-to-user signalling (UUS) | 
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| Recommendation Q.2957.1 (02/95) |  
| Approved in 1995-02-07 |  
| Status :  In force  |  |  |  
 
| Access : Freely available items |  
| Available languages and formats : |  
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|  | Click on the selected format and language to get the document
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|  | Format | Size | Posted | Article Number |  
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| English |  PDF (acrobat)
 | 93745 bytes | 2000-03-01 | E 6010 |  
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| Español |  PDF (acrobat)
 | 102761 bytes | 2000-03-01 | S 6011 |  
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| Français |  PDF (acrobat)
 | 105912 bytes | 2000-03-01 | F 6009 |  
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