Existing email address meta-syntax standards, especially GSTN

Folks,

It is worth mentioning that there already are mutliple meta-syntax standards 
for email local-part strings.
While I have a vague memory of there being more than two, the ones I know 
about in detail are:
  RFC 3191, Minimal GSTN address format in Internet Mail

  RFC 3801, Voice Profile for Internet Mail - version 2 (VPIMv2)


Please note that the BATV proposal seems to be compatible with RFC3191, in 
terms of having a registered string followed by an equal sign.
Hmmm.

Perhaps this means we do not need to define a new registry, but merely add 
values to the IANA GSTN Service-Selector table?
Why create a new table if we don't have to?

For that matter, why debate about a new syntax if we don't have to?...


d/
--

  Dave Crocker
  Brandenburg InternetWorking
  bbiw.net