I have problems with sems and SER+mediaproxy
When i send a call to sems for voicemail the SDP content received by sems have the c= line with the private address of caller. Before send the call to sems my SER use mediaproxy to fix nat problems, but sems dont receive the SDP changed and the RTP generated by SEMS is sent to the wrong ip address.
 
-- on my ser.cfg --
        if (method=="INVITE") {
           log(1,"ROUTE_0: INVITE METHOD\n");
 
           if (!search("^Record-Route:")) {
              log(1,"ROUTE_0: Use Mediaproxy");
              use_media_proxy();
           };
...
        log(1,"ROUTE_1: ARCOTEL-TO-ARCOTEL ");
        lookup("aliases");
        if (!lookup("location")) {
           log(1, "ROUTE_1: USER OFFLINE OR INVALID\n");
           route(8);
           break;
        };
...
route[8] {
       log(1,"ROUTE_8: VOICEMAIL");
        if (!t_newtran()) { sl_reply_error(); break; };
        use_media_proxy();
        t_reply("183","Conectandose");
        if(!vm("/tmp/am_fifo","voicemail")){
           log(1,"could not contact voicemail\n");
           t_reply("500","could not contact voicemail");
        };
break;
}
-- on my ser.cfg --
 
-- on syslog file --
May 26 10:13:17 billing /usr/sbin/ser[9814]: ROUTE_1: ARCOTEL-TO-ARCOTEL
May 26 10:13:17 billing /usr/sbin/ser[9814]: ROUTE_1: USER OFFLINE OR INVALID
May 26 10:13:17 billing /usr/sbin/ser[9814]: ROUTE_8: VOICEMAIL
May 26 10:13:17 billing proxydispatcher[9919]: command request 3B48F4D2-CB2B-42B2-80AD-F5064BC02868@10.10.0.29 10.10.0.29:800
0 200.80.35.6 arcotel.net local arcotel.net local X-Lite=20release=201103a flags=
May 26 10:13:17 billing proxydispatcher[9919]: domain arcotel.net doesn't define any mediaproxy.
May 26 10:13:17 billing proxydispatcher[9919]: will use default mediaproxy for this call.
May 26 10:13:17 billing mediaproxy[25721]: command request 3B48F4D2-CB2B-42B2-80AD-F5064BC02868@10.10.0.29 10.10.0.29:8000 20
0.80.35.6 arcotel.net local arcotel.net local X-Lite=20release=201103a flags=
May 26 10:13:17 billing proxydispatcher[9919]: forwarding to mediaproxy on /var/run/mediaproxy.sock: got: 'public.ip.proxy 35062
May 26 10:13:17 billing /usr/sbin/ser[9812]: ROUTE_0: Fixing Contact
May 26 10:13:17 billing /usr/sbin/ser[9812]: ACK
May 26 10:13:17 billing /usr/sbin/ser[9812]: END ROUTE_0 - RELAY
May 26 10:13:27 billing /usr/sbin/ser[9839]: ROUTE_0: Fixing Contact
May 26 10:13:27 billing /usr/sbin/ser[9839]: BYE
-- on syslog file --
 
-- on SEMS trace --
...
(9780) DEBUG: execute (AmServer.cpp:277): body: `v=0
o=ecolombo 2205701 2205771 IN IP4 10.10.0.29
s=X-Lite
c=IN IP4 10.10.0.29
t=0 0
m=audio 8000 RTP/AVP 3 0 101
a=rtpmap:0 pcmu/8000
a=rtpmap:3 gsm/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
...
(9920) DEBUG: setRAddr (AmRtpStream.cpp:333): RTP remote address set to 10.10.0.29:8000
(9920) DEBUG: negotiate (AmSession.cpp:150): Sending Rtp data to 10.10.0.29/8000
...
-- on SEMS trace --
 
Thanks
Ezequiel Colombo