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  Home : ITU-T : Publications : Recommendations : Q Series : Q.821
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Q.821 : Stage 2 and Stage 3 description for the Q3 interface - Alarm Surveillance  

Recommendation Q.821

In force components
Number
 Title Status
Q.821 (02/00)
  		Stage 2 and Stage 3 description for the Q3 interface - Alarm Surveillance   In force
 
 
Superseded and Withdrawn components
Number
 Title Status
Q.821 (03/93)
  		Stage 2 and stage 3 description for the Q3 interface - Alarm surveillance   Superseded
Q.821 (1993) Corrigendum 1 (03/99)
  		  Superseded

 

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Updated : 2014-05-15