Hi Klaus,
see above; the dialog module puts a dialog id in as RR param just for a fast dialog matching - the information about the dialog parameters, its state and so on are kept in memory by the dialog module.
Further, this is the only valid method, as the Record Route parameters can't be changed during the dialog.
I didn't realize that. Thanks for the explanation, I'll look it up in RFCs. Intuitively, I though this was true for the actual route hops, but not for added parameters.
Regards, Jerome