ietf-822
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Re: Re: RFC-822 addresses as part of X.400

1993-11-14 14:41:51
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In reply to:  43931114120534/0003765414NA2EM
Application message id:  0100044086222214
Importance:  Normal
Grade of Delivery:  Normal

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  Jacob Palme from Sweden seems to like "the natural way to write an 
"Internet style" mail address without ADMD, PRMD or DDA-s. However," he 
continues, "since the U.S. proposal includes optional ADMD, PRMD and 
DDA-s for "Internet style" mail addresses, I want to know how such 
addresses are to be written on business cards."

My answer: 

  How do you write your fax number on the business card? Simply as a 
telephone number according to CCITT recommendation E.163, I hope with a 
+ sign before the country code. 

And yet, your fax number can also be expressed as an X.121 address, as: 

   9-46-8-55443322

(if I may just invent a number in Stockholm ...). 

   And this can be used in a X.400 O/R Address, with or without a 
domain identifier. Would you write your fax number as an X.121 address? 
Would you write an X.400 domain identifier on your business card as 
part of the fax number? I don't think so. But the sender might add it, 
either because the explicit routing forced by this might save on 
telephone charges part of the total message cost, or because the 
sender's e-mail provider requires such information. 

   In analogy, if you omit the country code from your fax number, you 
will find most of your contacts to be intelligent enough to find out 
Sweden's telephone country code. Most telephone service provider assist 
their users with information on international dialling - as e-mail 
providers should assist their users in gatewaying. 

   I see the proposal we are discussing here in the same way -- but 
this is quite speculative since we have not yet had a chance to see the 
original proposal and the rationale for the optional X.400 domain 
identifier to go with an RFC-822 addresss. 

Kind regards,
L.Willms
[Germany]

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