I've found the answer on this link, at the bottom of page says: http://www.kamailio.org/wiki/install/upgrade/3.1.x-to-3.2.0 modules/rtpproxy * force_rtp_proxy() removed o use rtpproxy_offer() when it is SDP offer (mainly on INVITE request) and rtpproxy_answer() when it is SDP answer (mainly on INVITE replies) o new alternative is to use rtpproxy_manage() which does the detection of SDP offer/answer internally Then, on the line 729 replace force_rtp_proxy() with *rtpproxy_offer()* and on the line 806, replace force_rtp_proxy() with *rtpproxy_answer()* 2012/9/15 Cenk İlker İzanlı &lt;cenkilker(a)gmail.com <mailto:cenkilker@gmail.com>> Hi, I'm installing kamailio and rtpproxy with this guide. http://kb.asipto.com/kamailio:skype-like-service-in-less-than-one-hour Versions of the programs: # aptitude versions rtpproxy i 1.2.1-1 stable 500 root@li304-234:~# kamailio -V version: kamailio 3.3.0 (x86_64/linux) flags: STATS: Off, USE_IPV6, USE_TCP, USE_TLS, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, F_MALLOC, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 4MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: unknown compiled on 22:18:19 Jun 18 2012 with gcc 4.4.5 When I start kamailio, I get this error, Sep 14 17:08:44 (none) kamailio: ERROR: <core> [cfg.y:3455]: cfg. parser: failed to find command force_rtp_proxy Sep 14 17:08:44 (none) kamailio: : <core> [cfg.y:3594]: parse error in config file /etc/kamailio/kamailio.cfg, line 729, column 19: unknown command, missing loadmodule?#012 Sep 14 17:08:44 (none) kamailio: ERROR: <core> [cfg.y:3455]: cfg. parser: failed to find command force_rtp_proxy Sep 14 17:08:44 (none) kamailio: : <core> [cfg.y:3594]: parse error in config file /etc/kamailio/kamailio.cfg, line 806, column 19: unknown command, missing loadmodule?#012 Related lines throwing error are below. 724 route[RTPPROXY] { 725 #!ifdef WITH_NAT 726 if (is_method("BYE")) { 727 unforce_rtp_proxy(); 728 } else if (is_method("INVITE")){ 729 force_rtp_proxy(); 730 } 731 if (!has_totag()) add_rr_param(";nat=yes"); 732 #!endif 733 return; 734 } 735 803 #!ifdef WITH_NAT 804 if ((isflagset(FLT_NATS) || isbflagset(FLB_NATB)) 805 && status=~"(183)|(2[0-9][0-9])") { 806 force_rtp_proxy(); 807 } 808 if (isbflagset("6")) { 809 fix_nated_contact(); 810 } 811 #!endif Does anyone know what's the problem with cfg file? Thx. Cenk _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users