[Serusers] Behaviour of SER with private parameters in request URI

[David.Rio at alcatel.fr]

Hello all

I am using SER as a proxy server.
Please let's consider the following scenario

1/ Step 1

A UAC registers to SER

 ---------
|  SER  |
 ---------
       ^
       | REGISTER for 'service at logical-element.domain' contact 
'service at host'
       |    
       |
 ---------
|  UAC  |
 ---------



2/ Step 2

Another UAC tries to reach the previously registered user BUT WITH 
PRIVATE PARAMETERS in request URI

 ----------
|  UAC   |
 ----------
      |
      |     
INVITE service at logical-element.domain;param1=value1;param2=value2
      v
 ---------
|  SER  |
 ---------
       |
       |     INVITE service at host (sol 1)
       |     or INVITE service at host;param1=value1;param2=value2 (sol 2)
       v
 ---------
|  UAC  |
 ---------

The translation from service at logical-element.domain to service at host is 
done in SER  using 'lookup'.

3/ Problem :

I observe that SER when translating the user at host part of the request 
URI does not recopy the private parameters,
what I expected it to do.

=> I can not find any clear position in RFC 3261 (from my understanding 
of the RFC).
Is it a bug in SER or does SER really implement the behaviour a standard 
SIP proxy should have ?

Thanks for your answers

-- 
David Rio
Alcatel CIT - Rennes
ASD France
33 2 99 87 47 18