International Telecommunication Union � ITU
Fran�ais� Espa�ol
�
Site map Contact us Print version
� Home : ITU-T : Publications : Recommendations : Q�Series : Q.821
Recently posted�-� Search Recommendations
� �
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Superseded and Withdrawn components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� 		Stage 2 and stage 3 description for the Q3 interface - Alarm surveillance � Superseded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� 		� Superseded

�

Top�-� Feedback�-� Contact us�-� Copyright � ITU�2008�All Rights Reserved
Contact for this page :� ITU-T Publications
Updated :�2014-05-15		 �