[SR-Users] Does anyone know how to use Sipp to test Kamailio?

Hi I want to do the performance testing on the Kamailio. I found the related document about openser 1.2.0 version at: http://www.kamailio.org/docs/openser-performance-tests/. But somehow, I can't make it work with Kamailio 3.1. Do you happen to know what to do? By following the test case at http://www.kamailio.org/docs/openser-performance-tests/#tm-tests-c, I use the command as below to do the test: ./sipp -sf uac_inv.xml<http://www.kamailio.org/docs/openser-performance-tests/data/… 10.1.11.24:5060 192.10.1.11.24:5081 -m 200000 -r 7000 -d 1 -l 27 where 10.1.11.24:5060 is for Kamailio, and 10.1.11.24:5081 is for sipp uas. In the error log, I got the error message: *********************************************************************'. 2012-03-22 08:55:43:933 1332377743.933861: Aborting call on unexpected message for Call-Id &#39;77062-11425(a)172.16.220.1&#39;0.1': while expecting '100' (index 1), received 'SIP/2.0 403 Not relaying Via: SIP/2.0/UDP 172.16.220.1:5060 ;branch=z9hG4bK-11425-77062-0;rport=5060;received=10.1.11.197 From: sipp <sip:sipp@172.16.220.1:5060>;tag=11425SIPpTag0077062 To: sut <sip:service@10.1.1.197:5080 Call-ID: 77062-11425(a)172.16.220.1 CSeq: 1 INVITE Server: kamailio (3.2.0 (x86_64/linux)) Content-Length: 0 '. 2012-03-22 08:55:43:933 1332377743.933965: Aborting call on unexpected message for Call-Id &#39;77063-11425(a)172.16.220.1&#39;0.1': while expecting '100' (index 1), received 'SIP/2.0 403 Not relaying Via: SIP/2.0/UDP 172.16.220.1:5060 ;branch=z9hG4bK-11425-77063-0;rport=5060;received=10.1.11.197 From: sipp <sip:sipp@172.16.220.1:5060>;tag=11425SIPpTag0077063 To: sut <sip:service@10.1.1.197:5080 Call-ID: 77063-11425(a)172.16.220.1 CSeq: 1 INVITE Server: kamailio (3.2.0 (x86_64/linux)) Content-Length: 0 ********************************************************************* Thanks, Josh