Hi,

I'm using rtpproxy and per the documentation:
rtpproxy -l public_ip -s udp:localhost:22222 -F

Attached is the following:
Dave registering
Daniel registering
Dave calling Daniel, where Dave has a public IP and Daniel is behind a nat.  

Please let me know what you think is up.  

ttyl,
Dave

root@ip-10-248-96-110:~# ngrep -W byline -d eth0 port 5060
interface: eth0 (10.248.96.64/255.255.255.192)
filter: (ip or ip6) and ( port 5060 )
#
U 207.219.69.217:40821 -> 10.248.96.110:5060
REGISTER sip:54.245.31.65 SIP/2.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport;branch=z9hG4bKPjv4FDNMylgWBidOApHd6XwnelbzmM4ilC.
Route: <sip:54.245.31.65;transport=udp;lr>.
Max-Forwards: 70.
From: <sip:dave@54.245.31.65>;tag=aGyiM-Ay.io68vQRu2bqhXe8R0QjFeAH.
To: <sip:dave@54.245.31.65>.
Call-ID: Z.neH77UL4lxDM.lD1WEhAWwz3GzAjAX.
CSeq: 47479 REGISTER.
User-Agent: CSipSimple_SGH-T989D-15/r1841.
Contact: <sip:dave@10.207.158.89:51362;ob>.
Expires: 900.
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS.
Content-Length:  0.
.

#
U 207.219.69.217:40821 -> 10.248.96.110:5060
REGISTER sip:54.245.31.65 SIP/2.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport;branch=z9hG4bKPjv4FDNMylgWBidOApHd6XwnelbzmM4ilC.
Route: <sip:54.245.31.65;transport=udp;lr>.
Max-Forwards: 70.
From: <sip:dave@54.245.31.65>;tag=aGyiM-Ay.io68vQRu2bqhXe8R0QjFeAH.
To: <sip:dave@54.245.31.65>.
Call-ID: Z.neH77UL4lxDM.lD1WEhAWwz3GzAjAX.
CSeq: 47479 REGISTER.
User-Agent: CSipSimple_SGH-T989D-15/r1841.
Contact: <sip:dave@10.207.158.89:51362;ob>.
Expires: 900.
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS.
Content-Length:  0.
.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport=40821;branch=z9hG4bKPjv4FDNMylgWBidOApHd6XwnelbzmM4ilC;received=207.219.69.217.
From: <sip:dave@54.245.31.65>;tag=aGyiM-Ay.io68vQRu2bqhXe8R0QjFeAH.
To: <sip:dave@54.245.31.65>;tag=04836d58d9f212258001902fecae55a7.1da8.
Call-ID: Z.neH77UL4lxDM.lD1WEhAWwz3GzAjAX.
CSeq: 47479 REGISTER.
Contact: <sip:dave@10.207.158.89:51362;ob>;expires=900;received="sip:207.219.69.217:40821".
Server: kamailio (3.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport=40821;branch=z9hG4bKPjv4FDNMylgWBidOApHd6XwnelbzmM4ilC;received=207.219.69.217.
From: <sip:dave@54.245.31.65>;tag=aGyiM-Ay.io68vQRu2bqhXe8R0QjFeAH.
To: <sip:dave@54.245.31.65>;tag=04836d58d9f212258001902fecae55a7.1da8.
Call-ID: Z.neH77UL4lxDM.lD1WEhAWwz3GzAjAX.
CSeq: 47479 REGISTER.
Contact: <sip:dave@10.207.158.89:51362;ob>;expires=900;received="sip:207.219.69.217:40821".
Server: kamailio (3.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 207.219.69.217:40821 -> 10.248.96.110:5060
REGISTER sip:54.245.31.65 SIP/2.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport;branch=z9hG4bKPjWTIuWfFtybENprk.BSHmq8gK8YaDsbmE.
Route: <sip:54.245.31.65;transport=udp;lr>.
Max-Forwards: 70.
From: <sip:dave@54.245.31.65>;tag=.TD89IUCrxqiMH1e5bFWaMuEynSLEqLn.
To: <sip:dave@54.245.31.65>.
Call-ID: Z.neH77UL4lxDM.lD1WEhAWwz3GzAjAX.
CSeq: 47480 REGISTER.
User-Agent: CSipSimple_SGH-T989D-15/r1841.
Contact: <sip:dave@207.219.69.217:40821;ob>.
Contact: <sip:dave@10.207.158.89:51362;ob>;expires=0.
Expires: 900.
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS.
Content-Length:  0.
.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport=40821;branch=z9hG4bKPjWTIuWfFtybENprk.BSHmq8gK8YaDsbmE;received=207.219.69.217.
From: <sip:dave@54.245.31.65>;tag=.TD89IUCrxqiMH1e5bFWaMuEynSLEqLn.
To: <sip:dave@54.245.31.65>;tag=04836d58d9f212258001902fecae55a7.461a.
Call-ID: Z.neH77UL4lxDM.lD1WEhAWwz3GzAjAX.
CSeq: 47480 REGISTER.
Contact: <sip:dave@207.219.69.217:40821;ob>;expires=900;received="sip:207.219.69.217:40821".
Server: kamailio (3.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 207.219.69.217:40821 -> 10.248.96.110:5060
SUBSCRIBE sip:dave@54.245.31.65 SIP/2.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport;branch=z9hG4bKPjrjH5SPYixRFo0rd579291dFqOENDoPsX.
Max-Forwards: 70.
From: <sip:dave@54.245.31.65>;tag=TAr0lQnM2yc9yihWlGHegf8VIr1nRwgc.
To: <sip:dave@54.245.31.65>.
Contact: <sip:dave@207.219.69.217:40821;ob>.
Call-ID: gU6BQ.YmP-vhptXijwGO9sE.JFPC0cbi.
CSeq: 10823 SUBSCRIBE.
Route: <sip:54.245.31.65;transport=udp;lr>.
Event: message-summary.
Expires: 3600.
Supported: replaces, 100rel, timer, norefersub.
Accept: application/simple-message-summary.
Allow-Events: presence, message-summary, refer.
User-Agent: CSipSimple_SGH-T989D-15/r1841.
Content-Length:  0.
.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
SUBSCRIBE sip:dave@207.219.69.217:40821;ob SIP/2.0.
Record-Route: <sip:54.245.31.65;lr=on;nat=yes>.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bK5c5f.20a91df5.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPjrjH5SPYixRFo0rd579291dFqOENDoPsX.
Max-Forwards: 69.
From: <sip:dave@54.245.31.65>;tag=TAr0lQnM2yc9yihWlGHegf8VIr1nRwgc.
To: <sip:dave@54.245.31.65>.
Contact: <sip:dave@207.219.69.217:40821;ob>.
Call-ID: gU6BQ.YmP-vhptXijwGO9sE.JFPC0cbi.
CSeq: 10823 SUBSCRIBE.
Event: message-summary.
Expires: 3600.
Supported: replaces, 100rel, timer, norefersub.
Accept: application/simple-message-summary.
Allow-Events: presence, message-summary, refer.
User-Agent: CSipSimple_SGH-T989D-15/r1841.
Content-Length:  0.
.

#
U 207.219.69.217:40821 -> 10.248.96.110:5060
SIP/2.0 489 Bad Event.
Via: SIP/2.0/UDP 54.245.31.65:5060;received=54.245.31.65;branch=z9hG4bK5c5f.20a91df5.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport=40821;received=207.219.69.217;branch=z9hG4bKPjrjH5SPYixRFo0rd579291dFqOENDoPsX.
Record-Route: <sip:54.245.31.65;lr;nat=yes>.
Call-ID: gU6BQ.YmP-vhptXijwGO9sE.JFPC0cbi.
From: <sip:dave@54.245.31.65>;tag=TAr0lQnM2yc9yihWlGHegf8VIr1nRwgc.
To: <sip:dave@54.245.31.65>;tag=PzE1YO7IkGJfMc8lieebVTgbjdn48PkB.
CSeq: 10823 SUBSCRIBE.
Content-Length:  0.
.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
SIP/2.0 489 Bad Event.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport=40821;received=207.219.69.217;branch=z9hG4bKPjrjH5SPYixRFo0rd579291dFqOENDoPsX.
Record-Route: <sip:54.245.31.65;lr;nat=yes>.
Call-ID: gU6BQ.YmP-vhptXijwGO9sE.JFPC0cbi.
From: <sip:dave@54.245.31.65>;tag=TAr0lQnM2yc9yihWlGHegf8VIr1nRwgc.
To: <sip:dave@54.245.31.65>;tag=PzE1YO7IkGJfMc8lieebVTgbjdn48PkB.
CSeq: 10823 SUBSCRIBE.
Content-Length:  0.
.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
....
#
U 75.119.228.57:5060 -> 10.248.96.110:5060
REGISTER sip:54.245.31.65 SIP/2.0.
Call-ID: 96ad7dd7f80095985608a60efa23fae1@0:0:0:0:0:0:0:0.
CSeq: 1 REGISTER.
From: "daniel" <sip:daniel@54.245.31.65>;tag=38074025.
To: "daniel" <sip:daniel@54.245.31.65>.
Via: SIP/2.0/UDP 192.168.1.102:5060;branch=z9hG4bK-383839-3729739bb6546e3bb8d5edb5fb4c9bd0.
Max-Forwards: 70.
User-Agent: Jitsi1.0-build.3967Windows 7.
Expires: 600.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>;expires=600.
Content-Length: 0.
.

#
U 10.248.96.110:5060 -> 75.119.228.57:5060
SIP/2.0 200 OK.
Call-ID: 96ad7dd7f80095985608a60efa23fae1@0:0:0:0:0:0:0:0.
CSeq: 1 REGISTER.
From: "daniel" <sip:daniel@54.245.31.65>;tag=38074025.
To: "daniel" <sip:daniel@54.245.31.65>;tag=04836d58d9f212258001902fecae55a7.2bfe.
Via: SIP/2.0/UDP 192.168.1.102:5060;branch=z9hG4bK-383839-3729739bb6546e3bb8d5edb5fb4c9bd0;rport=5060;received=75.119.228.57.
Contact: <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>;expires=600;received="sip:75.119.228.57:5060".
Server: kamailio (3.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 75.119.228.57:5060 -> 10.248.96.110:5060
SUBSCRIBE sip:daniel@54.245.31.65 SIP/2.0.
Call-ID: 8d1533065d3a3c8548b786065f11ba6e@0:0:0:0:0:0:0:0.
CSeq: 1 SUBSCRIBE.
From: "daniel" <sip:daniel@54.245.31.65>;tag=38da9cb0.
To: "daniel" <sip:daniel@54.245.31.65>.
Via: SIP/2.0/UDP 192.168.1.102:5060;branch=z9hG4bK-383839-90746d53f9f4b1e7977c594e8fed34f2.
Max-Forwards: 70.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Event: presence.winfo.
Accept: application/watcherinfo+xml.
Expires: 3600.
Content-Length: 0.
.

#
U 10.248.96.110:5060 -> 75.119.228.57:5060
SUBSCRIBE sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65 SIP/2.0.
Record-Route: <sip:54.245.31.65;lr=on;nat=yes>.
Call-ID: 8d1533065d3a3c8548b786065f11ba6e@0:0:0:0:0:0:0:0.
CSeq: 1 SUBSCRIBE.
From: "daniel" <sip:daniel@54.245.31.65>;tag=38da9cb0.
To: "daniel" <sip:daniel@54.245.31.65>.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bK3895.ca731ca5.0.
Via: SIP/2.0/UDP 192.168.1.102:5060;rport=5060;received=75.119.228.57;branch=z9hG4bK-383839-90746d53f9f4b1e7977c594e8fed34f2.
Max-Forwards: 69.
Contact: "daniel" <sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Event: presence.winfo.
Accept: application/watcherinfo+xml.
Expires: 3600.
Content-Length: 0.
.

#
U 75.119.228.57:5060 -> 10.248.96.110:5060
SUBSCRIBE sip:daniel@54.245.31.65 SIP/2.0.
Call-ID: c4d205d6014f6901d3b532b85882cd55@0:0:0:0:0:0:0:0.
CSeq: 1 SUBSCRIBE.
From: "daniel" <sip:daniel@54.245.31.65>;tag=21bc6e63.
To: "daniel" <sip:daniel@54.245.31.65>.
Via: SIP/2.0/UDP 192.168.1.102:5060;branch=z9hG4bK-383839-2033a57b15398a17bf05ed32916476a9.
Max-Forwards: 70.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Event: message-summary.
Accept: application/simple-message-summary.
Expires: 3600.
Content-Length: 0.
.

#
U 10.248.96.110:5060 -> 75.119.228.57:5060
SUBSCRIBE sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65 SIP/2.0.
Record-Route: <sip:54.245.31.65;lr=on;nat=yes>.
Call-ID: c4d205d6014f6901d3b532b85882cd55@0:0:0:0:0:0:0:0.
CSeq: 1 SUBSCRIBE.
From: "daniel" <sip:daniel@54.245.31.65>;tag=21bc6e63.
To: "daniel" <sip:daniel@54.245.31.65>.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bK9d13.b2f45ce3.0.
Via: SIP/2.0/UDP 192.168.1.102:5060;rport=5060;received=75.119.228.57;branch=z9hG4bK-383839-2033a57b15398a17bf05ed32916476a9.
Max-Forwards: 69.
Contact: "daniel" <sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Event: message-summary.
Accept: application/simple-message-summary.
Expires: 3600.
Content-Length: 0.
.

#
U 75.119.228.57:5060 -> 10.248.96.110:5060
OPTIONS sip:54.245.31.65 SIP/2.0.
Call-ID: bf62f82e356a708c27d839a51d6ba14d@0:0:0:0:0:0:0:0.
CSeq: 1 OPTIONS.
From: "daniel" <sip:daniel@54.245.31.65>;tag=1b264f2d.
To: "daniel" <sip:daniel@54.245.31.65>.
Via: SIP/2.0/UDP 192.168.1.102:5060;branch=z9hG4bK-383839-84d9b651800827d865a6e7691017cadf.
Max-Forwards: 70.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Allow: INFO,OPTIONS,MESSAGE,BYE,REFER,SUBSCRIBE,ACK,CANCEL,PUBLISH,NOTIFY,INVITE.
Allow-Events: refer.
Content-Length: 0.
.

#
U 10.248.96.110:5060 -> 75.119.228.57:5060
SIP/2.0 484 Address Incomplete.
Call-ID: bf62f82e356a708c27d839a51d6ba14d@0:0:0:0:0:0:0:0.
CSeq: 1 OPTIONS.
From: "daniel" <sip:daniel@54.245.31.65>;tag=1b264f2d.
To: "daniel" <sip:daniel@54.245.31.65>;tag=04836d58d9f212258001902fecae55a7.a23c.
Via: SIP/2.0/UDP 192.168.1.102:5060;branch=z9hG4bK-383839-84d9b651800827d865a6e7691017cadf;rport=5060;received=75.119.228.57.
Server: kamailio (3.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 75.119.228.57:5060 -> 10.248.96.110:5060
PUBLISH sip:daniel@54.245.31.65 SIP/2.0.
Call-ID: bacf6be760a0538fc7be09dd5c366797@0:0:0:0:0:0:0:0.
CSeq: 1 PUBLISH.
From: "daniel" <sip:daniel@54.245.31.65>;tag=f49e20bb.
To: "daniel" <sip:daniel@54.245.31.65>.
Via: SIP/2.0/UDP 192.168.1.102:5060;branch=z9hG4bK-383839-5ab79cc333690390853813f2865d1e5f.
Max-Forwards: 70.
Content-Type: application/pidf+xml.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Expires: 3600.
Event: presence.
Content-Length: 415.
.
<?xml version="1.0" encoding="UTF-8" standalone="no"?><presence xmlns="urn:ietf:params:xml:ns:pidf" xmlns:dm="urn:ietf:params:xml:ns:pidf:data-model" xmlns:rpid="urn:ietf:params:xml:ns:pidf:rpid" entity="sip:daniel@54.245.31.65"><dm:person id="p9258"><rpid:activities/></dm:person><tuple id="t2981"><status><basic>open</basic></status><contact>sip:daniel@54.245.31.65</contact><note>Online</note></tuple></presence>
#
U 75.119.228.57:5060 -> 10.248.96.110:5060
SIP/2.0 501 Not implemented.
To: "daniel" <sip:daniel@54.245.31.65>.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bK3895.ca731ca5.0,SIP/2.0/UDP 192.168.1.102:5060;rport=5060;received=75.119.228.57;branch=z9hG4bK-383839-90746d53f9f4b1e7977c594e8fed34f2.
CSeq: 1 SUBSCRIBE.
Call-ID: 8d1533065d3a3c8548b786065f11ba6e@0:0:0:0:0:0:0:0.
From: "daniel" <sip:daniel@54.245.31.65>;tag=38da9cb0.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Content-Length: 0.
.

#
U 10.248.96.110:5060 -> 75.119.228.57:5060
SIP/2.0 404 Not here.
Call-ID: bacf6be760a0538fc7be09dd5c366797@0:0:0:0:0:0:0:0.
CSeq: 1 PUBLISH.
From: "daniel" <sip:daniel@54.245.31.65>;tag=f49e20bb.
To: "daniel" <sip:daniel@54.245.31.65>;tag=04836d58d9f212258001902fecae55a7.075a.
Via: SIP/2.0/UDP 192.168.1.102:5060;branch=z9hG4bK-383839-5ab79cc333690390853813f2865d1e5f;rport=5060;received=75.119.228.57.
Server: kamailio (3.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 10.248.96.110:5060 -> 75.119.228.57:5060
SIP/2.0 501 Not implemented.
To: "daniel" <sip:daniel@54.245.31.65>.
Via: SIP/2.0/UDP 192.168.1.102:5060;rport=5060;received=75.119.228.57;branch=z9hG4bK-383839-90746d53f9f4b1e7977c594e8fed34f2.
CSeq: 1 SUBSCRIBE.
Call-ID: 8d1533065d3a3c8548b786065f11ba6e@0:0:0:0:0:0:0:0.
From: "daniel" <sip:daniel@54.245.31.65>;tag=38da9cb0.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Content-Length: 0.
.

#
U 75.119.228.57:5060 -> 10.248.96.110:5060
SIP/2.0 501 Not implemented.
To: "daniel" <sip:daniel@54.245.31.65>.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bK9d13.b2f45ce3.0,SIP/2.0/UDP 192.168.1.102:5060;rport=5060;received=75.119.228.57;branch=z9hG4bK-383839-2033a57b15398a17bf05ed32916476a9.
CSeq: 1 SUBSCRIBE.
Call-ID: c4d205d6014f6901d3b532b85882cd55@0:0:0:0:0:0:0:0.
From: "daniel" <sip:daniel@54.245.31.65>;tag=21bc6e63.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Content-Length: 0.
.

#
U 10.248.96.110:5060 -> 75.119.228.57:5060
SIP/2.0 501 Not implemented.
To: "daniel" <sip:daniel@54.245.31.65>.
Via: SIP/2.0/UDP 192.168.1.102:5060;rport=5060;received=75.119.228.57;branch=z9hG4bK-383839-2033a57b15398a17bf05ed32916476a9.
CSeq: 1 SUBSCRIBE.
Call-ID: c4d205d6014f6901d3b532b85882cd55@0:0:0:0:0:0:0:0.
From: "daniel" <sip:daniel@54.245.31.65>;tag=21bc6e63.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Content-Length: 0.
.

#
U 207.219.69.217:40821 -> 10.248.96.110:5060
INVITE sip:daniel@54.245.31.65 SIP/2.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport;branch=z9hG4bKPj7ohi7tDsVbjxTKXgNQsTviH-zPxv0rBF.
Max-Forwards: 70.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>.
Contact: <sip:dave@207.219.69.217:40821;ob>.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17407 INVITE.
Route: <sip:54.245.31.65;transport=udp;lr>.
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS.
Supported: replaces, 100rel, timer, norefersub.
Session-Expires: 1800.
Min-SE: 90.
User-Agent: CSipSimple_SGH-T989D-15/r1841.
Content-Type: application/sdp.
Content-Length:   425.
.
v=0.
o=- 3556317015 3556317015 IN IP4 10.207.158.89.
s=pjmedia.
t=0 0.
m=audio 4008 RTP/AVP 96 3 0 8 101.
c=IN IP4 10.207.158.89.
a=rtcp:4009 IN IP4 10.207.158.89.
a=sendrecv.
a=rtpmap:96 SILK/8000.
a=fmtp:96 useinbandfec=0.
a=rtpmap:3 GSM/8000.
a=rtpmap:0 PCMU/8000.
a=rtpmap:8 PCMA/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-15.
a=zrtp-hash:1.10 0a851ee8921d1f71658c8253dd6097893c48e40886759ec0e21e79a61c1f1289.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
SIP/2.0 100 trying -- your call is important to us.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport=40821;branch=z9hG4bKPj7ohi7tDsVbjxTKXgNQsTviH-zPxv0rBF;received=207.219.69.217.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17407 INVITE.
Server: kamailio (3.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 10.248.96.110:5060 -> 75.119.228.57:5060
INVITE sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65 SIP/2.0.
Record-Route: <sip:54.245.31.65;lr=on;nat=yes>.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bKd6f6.b6db86e5.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj7ohi7tDsVbjxTKXgNQsTviH-zPxv0rBF.
Max-Forwards: 69.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>.
Contact: <sip:dave@207.219.69.217:40821;ob>.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17407 INVITE.
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS.
Supported: replaces, 100rel, timer, norefersub.
Session-Expires: 1800.
Min-SE: 90.
User-Agent: CSipSimple_SGH-T989D-15/r1841.
Content-Type: application/sdp.
Content-Length:   425.
.
v=0.
o=- 3556317015 3556317015 IN IP4 10.207.158.89.
s=pjmedia.
t=0 0.
m=audio 4008 RTP/AVP 96 3 0 8 101.
c=IN IP4 10.207.158.89.
a=rtcp:4009 IN IP4 10.207.158.89.
a=sendrecv.
a=rtpmap:96 SILK/8000.
a=fmtp:96 useinbandfec=0.
a=rtpmap:3 GSM/8000.
a=rtpmap:0 PCMU/8000.
a=rtpmap:8 PCMA/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-15.
a=zrtp-hash:1.10 0a851ee8921d1f71658c8253dd6097893c48e40886759ec0e21e79a61c1f1289.

#
U 207.219.69.217:40821 -> 10.248.96.110:5060
INVITE sip:daniel@54.245.31.65 SIP/2.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport;branch=z9hG4bKPj7ohi7tDsVbjxTKXgNQsTviH-zPxv0rBF.
Max-Forwards: 70.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>.
Contact: <sip:dave@207.219.69.217:40821;ob>.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17407 INVITE.
Route: <sip:54.245.31.65;transport=udp;lr>.
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS.
Supported: replaces, 100rel, timer, norefersub.
Session-Expires: 1800.
Min-SE: 90.
User-Agent: CSipSimple_SGH-T989D-15/r1841.
Content-Type: application/sdp.
Content-Length:   425.
.
v=0.
o=- 3556317015 3556317015 IN IP4 10.207.158.89.
s=pjmedia.
t=0 0.
m=audio 4008 RTP/AVP 96 3 0 8 101.
c=IN IP4 10.207.158.89.
a=rtcp:4009 IN IP4 10.207.158.89.
a=sendrecv.
a=rtpmap:96 SILK/8000.
a=fmtp:96 useinbandfec=0.
a=rtpmap:3 GSM/8000.
a=rtpmap:0 PCMU/8000.
a=rtpmap:8 PCMA/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-15.
a=zrtp-hash:1.10 0a851ee8921d1f71658c8253dd6097893c48e40886759ec0e21e79a61c1f1289.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
SIP/2.0 100 trying -- your call is important to us.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport=40821;branch=z9hG4bKPj7ohi7tDsVbjxTKXgNQsTviH-zPxv0rBF;received=207.219.69.217.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17407 INVITE.
Server: kamailio (3.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 75.119.228.57:5060 -> 10.248.96.110:5060
SIP/2.0 180 Ringing.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bKd6f6.b6db86e5.0,SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj7ohi7tDsVbjxTKXgNQsTviH-zPxv0rBF.
Record-Route: <sip:54.245.31.65;lr=on;nat=yes>.
CSeq: 17407 INVITE.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Content-Length: 0.
.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
SIP/2.0 180 Ringing.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Via: SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj7ohi7tDsVbjxTKXgNQsTviH-zPxv0rBF.
Record-Route: <sip:54.245.31.65;lr=on;nat=yes>.
CSeq: 17407 INVITE.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
Contact: "daniel" <sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Content-Length: 0.
.

#
U 10.248.96.110:5060 -> 75.119.228.57:5060
....
#
U 75.119.228.57:5060 -> 10.248.96.110:5060
SIP/2.0 200 OK.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bKd6f6.b6db86e5.0,SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj7ohi7tDsVbjxTKXgNQsTviH-zPxv0rBF.
Record-Route: <sip:54.245.31.65;lr=on;nat=yes>.
CSeq: 17407 INVITE.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Content-Type: application/sdp.
Content-Length: 291.
.
v=0.
o=daniel 0 0 IN IP4 192.168.1.102.
s=-.
c=IN IP4 192.168.1.102.
t=0 0.
m=audio 5000 RTP/AVP 3 0 8 101.
a=rtpmap:3 GSM/8000.
a=rtpmap:0 PCMU/8000.
a=rtpmap:8 PCMA/8000.
a=rtpmap:101 telephone-event/8000.
a=zrtp-hash:1.10 f1ca797c205f14d66d768afbec69c0bc0bbd00efde0aed8643269eb79df39248.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
SIP/2.0 200 OK.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Via: SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj7ohi7tDsVbjxTKXgNQsTviH-zPxv0rBF.
Record-Route: <sip:54.245.31.65;lr=on;nat=yes>.
CSeq: 17407 INVITE.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
Contact: "daniel" <sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Content-Type: application/sdp.
Content-Length: 291.
.
v=0.
o=daniel 0 0 IN IP4 192.168.1.102.
s=-.
c=IN IP4 192.168.1.102.
t=0 0.
m=audio 5000 RTP/AVP 3 0 8 101.
a=rtpmap:3 GSM/8000.
a=rtpmap:0 PCMU/8000.
a=rtpmap:8 PCMA/8000.
a=rtpmap:101 telephone-event/8000.
a=zrtp-hash:1.10 f1ca797c205f14d66d768afbec69c0bc0bbd00efde0aed8643269eb79df39248.

#
U 75.119.228.57:5060 -> 10.248.96.110:5060
SIP/2.0 200 OK.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bKd6f6.b6db86e5.0,SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj7ohi7tDsVbjxTKXgNQsTviH-zPxv0rBF.
Record-Route: <sip:54.245.31.65;lr=on;nat=yes>.
CSeq: 17407 INVITE.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Content-Type: application/sdp.
Content-Length: 291.
.
v=0.
o=daniel 0 0 IN IP4 192.168.1.102.
s=-.
c=IN IP4 192.168.1.102.
t=0 0.
m=audio 5000 RTP/AVP 3 0 8 101.
a=rtpmap:3 GSM/8000.
a=rtpmap:0 PCMU/8000.
a=rtpmap:8 PCMA/8000.
a=rtpmap:101 telephone-event/8000.
a=zrtp-hash:1.10 f1ca797c205f14d66d768afbec69c0bc0bbd00efde0aed8643269eb79df39248.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
SIP/2.0 200 OK.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Via: SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj7ohi7tDsVbjxTKXgNQsTviH-zPxv0rBF.
Record-Route: <sip:54.245.31.65;lr=on;nat=yes>.
CSeq: 17407 INVITE.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
Contact: "daniel" <sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Content-Type: application/sdp.
Content-Length: 291.
.
v=0.
o=daniel 0 0 IN IP4 192.168.1.102.
s=-.
c=IN IP4 192.168.1.102.
t=0 0.
m=audio 5000 RTP/AVP 3 0 8 101.
a=rtpmap:3 GSM/8000.
a=rtpmap:0 PCMU/8000.
a=rtpmap:8 PCMA/8000.
a=rtpmap:101 telephone-event/8000.
a=zrtp-hash:1.10 f1ca797c205f14d66d768afbec69c0bc0bbd00efde0aed8643269eb79df39248.

#
U 207.219.69.217:40821 -> 10.248.96.110:5060
ACK sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65 SIP/2.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport;branch=z9hG4bKPjnPZfA7u8zEE74yi8U3DDnZzRHz9I5Etv.
Max-Forwards: 70.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17407 ACK.
Route: <sip:54.245.31.65;lr;nat=yes>.
Content-Length:  0.
.

#
U 10.248.96.110:5060 -> 75.119.228.57:5060
ACK sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65 SIP/2.0.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bKcydzigwkX.
Via: SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPjnPZfA7u8zEE74yi8U3DDnZzRHz9I5Etv.
Max-Forwards: 69.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17407 ACK.
Content-Length:  0.
.

#
U 207.219.69.217:40821 -> 10.248.96.110:5060
INVITE sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65 SIP/2.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport;branch=z9hG4bKPj4Eeozcu1oKJbO8NsopWXsD3h3iPd6u9r.
Max-Forwards: 70.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Contact: <sip:dave@207.219.69.217:40821;ob>.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17408 INVITE.
Route: <sip:54.245.31.65;lr;nat=yes>.
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS.
Supported: replaces, 100rel, timer, norefersub.
Session-Expires: 1800.
Min-SE: 90.
Content-Type: application/sdp.
Content-Length:   325.
.
v=0.
o=- 3556317015 3556317016 IN IP4 10.207.158.89.
s=pjmedia.
t=0 0.
m=audio 4008 RTP/AVP 3 101.
c=IN IP4 10.207.158.89.
a=rtcp:4009 IN IP4 10.207.158.89.
a=sendrecv.
a=rtpmap:3 GSM/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-15.
a=zrtp-hash:1.10 0a851ee8921d1f71658c8253dd6097893c48e40886759ec0e21e79a61c1f1289.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
SIP/2.0 100 trying -- your call is important to us.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport=40821;branch=z9hG4bKPj4Eeozcu1oKJbO8NsopWXsD3h3iPd6u9r;received=207.219.69.217.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17408 INVITE.
Server: kamailio (3.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 10.248.96.110:5060 -> 75.119.228.57:5060
INVITE sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65 SIP/2.0.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bKb7f6.e2a38675.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj4Eeozcu1oKJbO8NsopWXsD3h3iPd6u9r.
Max-Forwards: 69.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Contact: <sip:dave@207.219.69.217:40821;ob>.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17408 INVITE.
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS.
Supported: replaces, 100rel, timer, norefersub.
Session-Expires: 1800.
Min-SE: 90.
Content-Type: application/sdp.
Content-Length:   325.
.
v=0.
o=- 3556317015 3556317016 IN IP4 10.207.158.89.
s=pjmedia.
t=0 0.
m=audio 4008 RTP/AVP 3 101.
c=IN IP4 10.207.158.89.
a=rtcp:4009 IN IP4 10.207.158.89.
a=sendrecv.
a=rtpmap:3 GSM/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-15.
a=zrtp-hash:1.10 0a851ee8921d1f71658c8253dd6097893c48e40886759ec0e21e79a61c1f1289.

#
U 207.219.69.217:40821 -> 10.248.96.110:5060
INVITE sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65 SIP/2.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport;branch=z9hG4bKPj4Eeozcu1oKJbO8NsopWXsD3h3iPd6u9r.
Max-Forwards: 70.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Contact: <sip:dave@207.219.69.217:40821;ob>.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17408 INVITE.
Route: <sip:54.245.31.65;lr;nat=yes>.
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS.
Supported: replaces, 100rel, timer, norefersub.
Session-Expires: 1800.
Min-SE: 90.
Content-Type: application/sdp.
Content-Length:   325.
.
v=0.
o=- 3556317015 3556317016 IN IP4 10.207.158.89.
s=pjmedia.
t=0 0.
m=audio 4008 RTP/AVP 3 101.
c=IN IP4 10.207.158.89.
a=rtcp:4009 IN IP4 10.207.158.89.
a=sendrecv.
a=rtpmap:3 GSM/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-15.
a=zrtp-hash:1.10 0a851ee8921d1f71658c8253dd6097893c48e40886759ec0e21e79a61c1f1289.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
SIP/2.0 100 trying -- your call is important to us.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport=40821;branch=z9hG4bKPj4Eeozcu1oKJbO8NsopWXsD3h3iPd6u9r;received=207.219.69.217.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17408 INVITE.
Server: kamailio (3.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 75.119.228.57:5060 -> 10.248.96.110:5060
SIP/2.0 200 OK.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bKb7f6.e2a38675.0,SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj4Eeozcu1oKJbO8NsopWXsD3h3iPd6u9r.
CSeq: 17408 INVITE.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Content-Type: application/sdp.
Content-Length: 243.
.
v=0.
o=daniel 0 1 IN IP4 192.168.1.102.
s=-.
c=IN IP4 192.168.1.102.
t=0 0.
m=audio 5000 RTP/AVP 3 101.
a=rtpmap:3 GSM/8000.
a=rtpmap:101 telephone-event/8000.
a=zrtp-hash:1.10 f1ca797c205f14d66d768afbec69c0bc0bbd00efde0aed8643269eb79df39248.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
SIP/2.0 200 OK.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Via: SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj4Eeozcu1oKJbO8NsopWXsD3h3iPd6u9r.
CSeq: 17408 INVITE.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
Contact: "daniel" <sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Content-Type: application/sdp.
Content-Length: 243.
.
v=0.
o=daniel 0 1 IN IP4 192.168.1.102.
s=-.
c=IN IP4 192.168.1.102.
t=0 0.
m=audio 5000 RTP/AVP 3 101.
a=rtpmap:3 GSM/8000.
a=rtpmap:101 telephone-event/8000.
a=zrtp-hash:1.10 f1ca797c205f14d66d768afbec69c0bc0bbd00efde0aed8643269eb79df39248.

#
U 207.219.69.217:40821 -> 10.248.96.110:5060
ACK sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65 SIP/2.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport;branch=z9hG4bKPj9WzKBFA5VqrIZyKu.jacccQpjIODBJnZ.
Max-Forwards: 70.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17408 ACK.
Route: <sip:54.245.31.65;lr;nat=yes>.
Content-Length:  0.
.

#
U 10.248.96.110:5060 -> 75.119.228.57:5060
ACK sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65 SIP/2.0.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bKcydzigwkX.
Via: SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj9WzKBFA5VqrIZyKu.jacccQpjIODBJnZ.
Max-Forwards: 69.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17408 ACK.
Content-Length:  0.
.

#
U 75.119.228.57:5060 -> 10.248.96.110:5060
SIP/2.0 200 OK.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bKb7f6.e2a38675.0,SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj4Eeozcu1oKJbO8NsopWXsD3h3iPd6u9r.
CSeq: 17408 INVITE.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Content-Type: application/sdp.
Content-Length: 243.
.
v=0.
o=daniel 0 1 IN IP4 192.168.1.102.
s=-.
c=IN IP4 192.168.1.102.
t=0 0.
m=audio 5000 RTP/AVP 3 101.
a=rtpmap:3 GSM/8000.
a=rtpmap:101 telephone-event/8000.
a=zrtp-hash:1.10 f1ca797c205f14d66d768afbec69c0bc0bbd00efde0aed8643269eb79df39248.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
SIP/2.0 200 OK.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Via: SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj4Eeozcu1oKJbO8NsopWXsD3h3iPd6u9r.
CSeq: 17408 INVITE.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
Contact: "daniel" <sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Content-Type: application/sdp.
Content-Length: 243.
.
v=0.
o=daniel 0 1 IN IP4 192.168.1.102.
s=-.
c=IN IP4 192.168.1.102.
t=0 0.
m=audio 5000 RTP/AVP 3 101.
a=rtpmap:3 GSM/8000.
a=rtpmap:101 telephone-event/8000.
a=zrtp-hash:1.10 f1ca797c205f14d66d768afbec69c0bc0bbd00efde0aed8643269eb79df39248.

#
U 207.219.69.217:40821 -> 10.248.96.110:5060
ACK sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65 SIP/2.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport;branch=z9hG4bKPj9WzKBFA5VqrIZyKu.jacccQpjIODBJnZ.
Max-Forwards: 70.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17408 ACK.
Route: <sip:54.245.31.65;lr;nat=yes>.
Content-Length:  0.
.

#
U 10.248.96.110:5060 -> 75.119.228.57:5060
ACK sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65 SIP/2.0.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bKcydzigwkX.
Via: SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj9WzKBFA5VqrIZyKu.jacccQpjIODBJnZ.
Max-Forwards: 69.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17408 ACK.
Content-Length:  0.
.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
....
#
U 75.119.228.57:5060 -> 10.248.96.110:5060
OPTIONS sip:54.245.31.65 SIP/2.0.
Call-ID: 543e56e9f98adb6f173807e00452c436@0:0:0:0:0:0:0:0.
CSeq: 2 OPTIONS.
From: "daniel" <sip:daniel@54.245.31.65>;tag=78597d2a.
To: "daniel" <sip:daniel@54.245.31.65>.
Via: SIP/2.0/UDP 192.168.1.102:5060;branch=z9hG4bK-383839-ba67b7be510f578dba23581288a1c2eb.
Max-Forwards: 70.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Allow: INFO,OPTIONS,MESSAGE,BYE,REFER,SUBSCRIBE,ACK,CANCEL,PUBLISH,NOTIFY,INVITE.
Allow-Events: refer.
Content-Length: 0.
.

#
U 10.248.96.110:5060 -> 75.119.228.57:5060
SIP/2.0 484 Address Incomplete.
Call-ID: 543e56e9f98adb6f173807e00452c436@0:0:0:0:0:0:0:0.
CSeq: 2 OPTIONS.
From: "daniel" <sip:daniel@54.245.31.65>;tag=78597d2a.
To: "daniel" <sip:daniel@54.245.31.65>;tag=04836d58d9f212258001902fecae55a7.3b77.
Via: SIP/2.0/UDP 192.168.1.102:5060;branch=z9hG4bK-383839-ba67b7be510f578dba23581288a1c2eb;rport=5060;received=75.119.228.57.
Server: kamailio (3.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 207.219.69.217:40821 -> 10.248.96.110:5060
BYE sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65 SIP/2.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;rport;branch=z9hG4bKPj2gI.EiVPPZxanfpdFQOjLydpWk5.i5UY.
Max-Forwards: 70.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17409 BYE.
Route: <sip:54.245.31.65;lr;nat=yes>.
User-Agent: CSipSimple_SGH-T989D-15/r1841.
Content-Length:  0.
.

#
U 10.248.96.110:5060 -> 75.119.228.57:5060
BYE sip:daniel@75.119.228.57:5060;transport=udp;registering_acc=54_245_31_65 SIP/2.0.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bKa7f6.f593b8d6.0.
Via: SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj2gI.EiVPPZxanfpdFQOjLydpWk5.i5UY.
Max-Forwards: 69.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
CSeq: 17409 BYE.
User-Agent: CSipSimple_SGH-T989D-15/r1841.
Content-Length:  0.
.

#
U 75.119.228.57:5060 -> 10.248.96.110:5060
SIP/2.0 200 OK.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Via: SIP/2.0/UDP 54.245.31.65:5060;branch=z9hG4bKa7f6.f593b8d6.0,SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj2gI.EiVPPZxanfpdFQOjLydpWk5.i5UY.
CSeq: 17409 BYE.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Content-Length: 0.
.

#
U 10.248.96.110:5060 -> 207.219.69.217:40821
SIP/2.0 200 OK.
To: <sip:daniel@54.245.31.65>;tag=c7436f1e.
Via: SIP/2.0/UDP 10.207.158.89:51362;received=207.219.69.217;rport=40821;branch=z9hG4bKPj2gI.EiVPPZxanfpdFQOjLydpWk5.i5UY.
CSeq: 17409 BYE.
Call-ID: cG7lF7dXytDwgmhVa19g0aGEOa6s1Rxl.
From: <sip:dave@54.245.31.65>;tag=BDvpvvb0IsNu9oFPCeO2XI-M-Qwl7V4S.
Contact: "daniel" <sip:daniel@192.168.1.102:5060;transport=udp;registering_acc=54_245_31_65>.
User-Agent: Jitsi1.0-build.3967Windows 7.
Content-Length: 0.
.

#
U 207.219.69.217:40821 -> 10.248.96.110:5060
.

^Cexit
61 received, 0 dropped


Date: Mon, 10 Sep 2012 09:59:08 +0200
From: miconda@gmail.com
To: sr-users@lists.sip-router.org
CC: jdavidthomson@hotmail.com
Subject: Re: [SR-Users] using kamailio with clients in a nat environment

Hello,

what are you using for rtp relay? Sending here the sip trace of such call (e.g., ngrep) would help to spot if the signaling is updated correctly for nat traversal.

Cheers,
Daniel

On 9/10/12 3:18 AM, David Thomson wrote:
hi,

I was wondering if in clients in a nat environment need to be in the dmz or need to have ports forwarded for kamailio to be used to connect the clients?  I have setup kamailio with the nat settings but am still only getting one way audio.  chances are it has not been setup correctly but just checking.

If i try to connect the two clients from the same network i can get zrtp and 2 way communication working correctly.  if one of the clients is on a different network the call initiates and answers but zrtp and 2way audio does not work.

kamailio 3.3 running on ec2

ttyl,
Dave


_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users@lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio Advanced Training, Berlin, Nov 5-8, 2012 - http://asipto.com/u/kat
Kamailio Advanced Training, Miami, USA, Nov 12-14, 2012 - http://asipto.com/u/katu