Q86977

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page	Q86977: X400: Definition of X.121 Address	/kb/086/Q86977/

Q86977: X400: Definition of X.121 Address

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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

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The information in this article applies to:

- Microsoft Mail Gateway to X.400, version 3.0 
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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

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

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