Q86977: X400: Definition of X.121 Address

Article: Q86977
Product(s): Microsoft Mail For PC Networks
Version(s): MS-DOS:3.0
Operating System(s): 
Keyword(s): 
Last Modified: 07-NOV-1999

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Mail Gateway to X.400, version 3.0 
-------------------------------------------------------------------------------

SUMMARY
=======

The X.121 is an address that enables packets to be sent to people on a public
data network. The X.25 network uses X.121 addresses to determine routing within
the X.25 network.

The X.121 address can be equated to a voice phone number on a telephone network.

The X.121 address length for an international data number is a 10-digit numeric
character set from 0 to 9. The number formats for various data accesses are as
follows:

  International data number:

  P + DNIC + NTN

  Or, if the number is part of a national integrated numbering scheme:

  P + DCC + National Number

  Public telephone network:

  P + 9 + TCC + National Significant Telephone Number

  Public Telex network

  P + 8 + TDC + National Telex Number

Here are descriptions of the acronyms used above:

  Acronym   Description
  -------   -----------

  DCC       Data country code (3 digits)
  DNIC      Data network identification code (4 digits)
  NTN       Network terminal number)
  P         International prefix
  TCC       Telephone country code
  TDC       Telex destination code

For more information, refer to CCITT Recommendation X.121 Fascicle VIII.4.


Additional query words: pcmail

======================================================================
Keywords          :  
Technology        : kbMailSearch kbMailGateSearch kbZNotKeyword3 kbMailGatex400300
Version           : MS-DOS:3.0

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 1986-2002.