[Serusers] CDR problem

[yy]

Hi guys,

I'm currently trying out CDRTool with ser for generating call detail 
records.Currently, I getting a problem in a single call session whereby 
when a user calls a certain destination and an invite is sent; if the 
called party does not reply in time, a reinvite is sent. However, both 
records are recorded in CDRTool, each having the same SIP Session. Why 
it this so? Shouldn't only one session be recorded?

            Session start time                              SIP caller  
                                In      SIP destination                  
        Out      Dur    Price      KBIn      KBOut      Status      Codecs
4N      2005-05-05 18:32:22                     1001 at lab.test.com      
                            1002 at lab.test.com                            
00.07                                               Ok (200)
    Signalling information   
    SIP Session:     000ded22-eeb20005-306b5b03-43a91caf at 192.168.10.2   
    SIP Method:    1 from :    
    SIP Status:    Ok (200) DelayTime: (s)   
    SIP From:    sip:1001 at lab.test.com
    SIP To:    sip:1002 at lab.test.com  
    Start time (caller):     2005-05-05 18:32:22 Asia
    Start time (proxy):     2005-05-05 18:32:22 Asia
    Stop time (proxy):     2005-05-05 18:32:29 Asia
    Session duration:    00:07   
    SIP Proxy:    192.168.1.2   
    Next SIP hop:   
   
    Billing Party:    1001 at lab.test.com

5N    2005-05-05 18:32:21                        1001 at lab.test.com    
                         1002 at lab.test.com                            
00:08                                                      Ok (200)
Signalling information   
    SIP Session:     000ded22-eeb20005-306b5b03-43a91caf at 192.168.10.2   
    SIP Method:    1 from :    
    SIP Status:    Ok (200) DelayTime: (s)   
    SIP From:    sip:1001 at lab.test.com
    SIP To:    sip:1002 at lab.test.com 
    Start time (caller):     2005-05-05 18:32:21 Asia
    Start time (proxy):     2005-05-05 18:32:21 Asia 
    Stop time (proxy):     2005-05-05 18:32:29 Asia 
    Session duration:    00:08   
    SIP Proxy:    192.168.1.2   
    Next SIP hop:   
   
    Billing Party:    1001 at lab.test.com

Kindly advise,


Regards,
YY