or (after domain-style addresses are finally implemented)
+4159408776(_at_)fax(_dot_)attmail(_dot_)com
I think this is definitely more intuitive than something like
fax(_at_)6(_dot_)7(_dot_)7(_dot_)8(_dot_)0(_dot_)4(_dot_)9(_dot_)5(_dot_)1(_dot_)4(_dot_)1(_dot_)attmail(_dot_)com(_dot_)
But the whole point of the latter address is that you can use DNS
delegations and DNS wildcard RRs to refer to different gateway points.
This would usually be used to get you close so that only local
telephone calls need be made, or so the individual numbers or
exchanges can be delegated to specific gateways.
Take a look at the TPC.INT stuff for "remote printing" email -> FAX
gateway for more details.
Louis A. Mamakos
University of Maryland, College Park