<Matthew>
So you are saying "Forget transport, focus on the transaction minus
delivery?". I actually feel that way as well, but is there not a whole
committee devoted to transport, and wouldn't they need to make some
decisions about this?
</Matthew>
Here is a section 4.1.4 from ebXML TR&P Requirements & Overview Spec:
<snip>
4) Messages can be transported over many network protocols (e.g. HTTP, SMTP,
CORBA, JMQ,
MQSeries, MSMQ, etc)
</snip>
Also, you might look at:
http://www.xml.org/archives/ebxml-transport/msg00233.html
Regards,
Nikola