You can always check the RFC for the definitive answer:
> 5.2. Acct-Delay-Time
>
> Description
>
> This attribute indicates how many seconds the client has been
> trying to send this record for, and can be subtracted from the
> time of arrival on the server to find the approximate time of the
> event generating this Accounting-Request. (Network transit time
> is ignored.)
>
> Type
>
> 41 for Acct-Delay-Time.
-- Dale E. Reed Jr. (daler@iea.com)_________________________________________________________________ IEA Software, Inc. | RadiusNT, Emerald, and NT FAQs Internet Solutions for Today | http://www.iea-software.com