International Telecommunication Union � ITU
Fran�ais� Espa�ol
�
Site map Contact us Print version
� Home : ITU-T : Publications : Recommendations : X�Series : X.420
Recently posted�-� Search Recommendations
� �
X.420�:�Information technology - Message Handling Systems (MHS): Interpersonal Messaging System �

Recommendation X.420

In force components
Number
 Title Status
X.420 (06/99)
� 		Information technology - Message Handling Systems (MHS): Interpersonal Messaging System � In force
�
�
Superseded and Withdrawn components
Number
 Title Status
X.420 (11/88)
� 		Message handling systems: Interpersonal messaging system � Superseded
X.420 (09/92)
� 		Information technology - Message handling systems: Interpersonal messaging system � Superseded
X.420 (10/96)
� 		Information technology - Message handling systems: Interpersonal messaging system � Superseded
X.420 (1996) Technical Cor. 1 (08/97)
� 		� Superseded
X.420 (1995) Amendment 1 (08/97)
� 		Security error diagnostic codes � Superseded
X.420 (1996) Technical Cor. 2 (12/97)
� 		�
Published as a consolidated file with X.420 Corr. 3 (09/1998) 		Superseded
X.420 (1996) Amendment 2 (12/97)
� 		�
Never published, consolidated in X.420 (1999) 		Superseded
X.420 (1996) Technical Cor. 3 (09/98)
� 		�
Published in English and electronic format only as a consolidated file with X.420 Cor. 2 (12/1997) 		Superseded
X.420 (1996) Amendment 3 (09/98)
� 		�
Never published, consolidated in X.420 (1999) 		Superseded

�

Top�-� Feedback�-� Contact us�-� Copyright � ITU�2008�All Rights Reserved
Contact for this page :� ITU-T Publications
Updated :�2014-05-06		 �