15 Apr
1999
15 Apr
'99
5:15 a.m.
Maybe the idea was as following. The Endpoint itself may avoid parsing or somehow handling any prefixes in the dialed number but may just pass the E164 alias as it is to its Gatekeeper. The latter may avoid replacing the prefixes with ones specific to the destination (say) gateway but may translate the alias into a partyNumber one and return it in ACF. So E164 is understood as a locally valid alias, and partyNumber as an alias to be propagated worldwide.
Alexander Rovny MD Information Systems