/wp-content/uploads/2019/01/ICD-international-logo.png 0 0 ICD International /wp-content/uploads/2019/01/ICD-international-logo.png ICD International2021-12-16 13:34:352021-12-16 13:34:35Atlas 400
X.400 is an email protocol standardised by the ITU. It has never been used on a significant scale. However, it is still used today as a value-added network in EDI exchanges. It has been the subject of much controversy over its comparison with SMTP, with the latter clearly prevailing.