[Sigtran] SCON in response to DAUD

Hi,

This is regarding Section 4.5.3 ASP Auditing in draft RFC3332bis. As I
understand, this draft replaces the Implementor's Guide, Version 7.

The Implmentor's Guide, Version 7 proposed following change in the above
Section specifying that in response to DAUD message where the SGP
maintains the congestion status of the SS7 destination, the SGP MUST
additionally respond with an SCON message before the DAVA or DRST
message . 

This change is not present in the latest draft RFC3332bis. Can somebody
let me know if there is a specific reason for this? 

As per draft-ietf-sigtran-m3ua-implementors-guide-07.txt -
--------------------------------------------------------

3.8 Auditing procedure and congestion state
3.8.1 Description of the problem

   The current description of the AUDIT procedure in regards to
   congestion state is not clear enough. When to send SCON is not
   completely specified.

3.8.2 Text changes to the document
....
New text: (Section 3.3.1)
---------

   [...]. Where the SGP maintains the congestion status of the SS7
   destination, the SGP MUST additionally respond with an SCON message
   before the DAVA or DRST message.  If the SS7 destination is
   available, the SGP MUST respond with an SCON message (indicating the
   appropriate congestion level) and then a DAVA message.  If the SS7
   destination is restricted, the SGP MUST respond with an SCON message
   (with the appropriate congestion level) immediately followed by a
   DRST message.  If the SGP has no information on the availability
   status of the SS7 destination, the SGP responds with a DUNA message,
   as it has no routing information to allow it to route traffic to this
   destination.

   Where the SGP does not maintain the congestion status of the SS7
   destination, the response to a DAUD message should always be only a
   DAVA, DRST or DUNA message as appropriate.
--------------------------

Thanks,
Soni

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