RE: Contacts length

["Hollenbeck, Scott" <shollenbeck@verisign.com>]

> -----Original Message-----
> From: Julián Muñoz Domínguez [mailto:jmunoz@softhome.net]
> Sent: Wednesday, November 07, 2001 7:19 AM
> To: ietf-provreg@cafax.se
> Subject: Contacts length
> 
> 
> (Sorry this query is a bit off-topic)
> 
> I am looking for a recomendation about the length of the fields (for
> example the Contacts).
> I saw something in the XML of
> http://www.ietf.org/internet-drafts/draft-ietf-provreg-epp-contact-03.txt
> 
> Where are taken this values from ?
> 
> What is your recomendation for the length and type creating a database
> which include this fields (for example taking the double of this length is
> safe?)

Some of the length limits are taken directly from international standards.
For example, the maximum length of telephone numbers is defined by ITU-T
standard E.164.  Postal addressing fields were initially limited by
definitions found in ISO standard 11180:1993(E), but we've discovered that
there are exceptions to that standard.  So, to make a long story short, some
of the field limits are defined per existing standards, and some are defined
to accommodate what implementers have found to be real-world limits.

As for creating database fields, there's always risk in implementing an I-D
because things might change if/as the document progresses.  You're probably
pretty safe in using the values as-is, but there is a risk that some might
change.  Doubling would surely be safe, but it's probably far more than what
you'll really need.

-Scott-