Filename in AS2 messages

I'd like to clarify how the filenames are expected to be communicated in 
AS2. Since AS2 data is represented by MIME body, the implication is that 
Content-Disposition header can be used for that purpose.

Is this a correct assumption?

If so, it would be great if AS2 spec made an explicit reference to RFC-2183 
(update of rfc1806) "Communicating Presentation Information in Internet 
Messages: The Content-Disposition Header Field"  with respect to AS2 
filename. I've noticed that the header is included in the samples that 
accompany the specification but making it explicit would improve 
interoperability.

Also, as a practical question, do current AS2 implementation include 
Content-Disposition header with filename parameter when sending and look 
for it when receiving as far as people know?

Thank you.

Dmitry Dolinsky
Tumbleweed Communications Corp. 


"Tumbleweed E-mail Firewall <tumbleweed.com>" made the following
 annotations on 03/24/05 18:34:12
------------------------------------------------------------------------------
This e-mail, including attachments, may include confidential and/or proprietary information, and may be used only by the person or entity to which it is addressed.  If the reader of this e-mail is not the intended recipient or his or her authorized agent, the reader is hereby notified that any dissemination, distribution or copying of this e-mail is prohibited. If you have received this e-mail in error, please notify the sender by replying to this message and delete this e-mail immediately.
==============================================================================