[Freeswitch-users] IP infomation in SDP

[Jimmy Chang]

Hi,

In the default configuration, the internal profile listen port 5060 and 
external profile listen port 5080.
And follow the setting in http://wiki.freeswitch.org/wiki/NAT_Traversal
vars.xml
<X-PRE-PROCESS cmd="set" data="bind_server_ip=59.120.xx.xx"/>
<X-PRE-PROCESS cmd="set" data="external_sip_ip=stun:stun.freeswitch.org"/>
<X-PRE-PROCESS cmd="set" data="external_rtp_ip=stun:stun.freeswitch.org"/>

internal.xml
<param name="ext-rtp-ip" value="$${external_rtp_ip}"/>

external.xml
<param name="ext-sip-ip" value="$${external_sip_ip}"/>
<param name="ext-rtp-ip" value="$${external_rtp_ip}"/>


When user make a SIP call from public network using external 
profile(5080), he encountered no audio.
Here is the SDP of 200 OK from FS to user.
/v=0//
//o=FreeSWITCH 1366781127 1366781128 IN IP4 10.0.110.33//
//s=FreeSWITCH//
//c=IN IP4 10.0.110.33//
//t=0 0//
//m=audio 10568 RTP/AVP 18 101//
//a=rtpmap:18 G729/8000//
//a=fmtp:18 annexb=no//
//a=rtpmap:101 telephone-event/8000//
//a=fmtp:101 0-16//
//a=silenceSupp:off - - - -//
//a=ptime:20//
//m=video 10530 RTP/AVP 116//
//a=rtpmap:116 H264/90000//
//a=fmtp:116 profile-level-id=428014/


When user make a SIP call from public network using internal 
profile(5060), everything OK.
Here is the SDP of 200 OK from FS to user.
/v=0//
//o=FreeSWITCH 1366780920 1366780921 IN IP4 //59.120.xx.xx//
//s=FreeSWITCH//
//c=IN IP4 //59.120.xx.xx//
//t=0 0//
//m=audio 10892 RTP/AVP 18 101//
//a=rtpmap:18 G729/8000//
//a=fmtp:18 annexb=no//
//a=rtpmap:101 telephone-event/8000//
//a=fmtp:101 0-16//
//a=silenceSupp:off - - - -//
//a=ptime:20//
//m=video 10178 RTP/AVP 116//
//a=rtpmap:116 H264/90000//
//a=fmtp:116 profile-level-id=428014//
/

I can't figure out which parameters in sofia profile or in dialplan make 
port 5060 set the public IP in SDP and work fine.
Any advice?

Thanks in advance.
Jimmy

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