[Serusers] Calls from UAs behind NAT getting a 503 error...

Kyriakos tank30 at hotmail.com
Wed Nov 9 14:59:53 CET 2005 

So Klaus, basically what i need is an extra handler for ACK?

route[6] {

# ------------------------------------------------------------------------
# ACK Handler
# ------------------------------------------------------------------------
if (method=="ACK") {
t_relay();
return;
};

Does this affect the call flow?
Im a newbie in SER and sip so please bare with me.
:-)
By the way thanks for the reply.

Kyriakos

----- Original Message ----- 
From: "Klaus Darilion" <klaus.mailinglists at pernau.at>
To: "Kyriakos" <tank30 at hotmail.com>
Cc: <serusers at lists.iptel.org>
Sent: Wednesday, November 09, 2005 3:38 PM
Subject: Re: [Serusers] Calls from UAs behind NAT getting a 503 error...


> Kyriakos wrote:
>> Just wanted to add that I also get the warning:   I wont send a reply for 
>> ACK.
>> I guess that means ACK from UA behind NAT dont reach the pstn gw?
>
> No, this means that your config is broken and you are trying to send 
> replies for incoming ACK requests.
>
> regards
> klaus
>
>>
>> thanks,
>> Kyriakos
>>
>>
>> ----- Original Message ----- From: "KM" <tank30 at hotmail.com>
>> To: <serusers at lists.iptel.org>
>> Sent: Wednesday, November 09, 2005 11:38 AM
>> Subject: [Serusers] Calls from UAs behind NAT getting a 503 error...
>>
>>
>>> Hi,
>>> calls from a UA that is on public ip go through the pstn gw and 
>>> terminate ok.
>>> Calls from behind NAT get a 503 error from the GW when the INVITE 
>>> message is sent from SER.
>>>
>>> The invite messages for both cases are the same except from the VIA 
>>> header which for the latter one contains the private ip of the UA.
>>> Contact header is ok.
>>> Could that be the reason that im getting calls rejected?
>>> Is there a way to rewrite the VIA header?
>>>
>>>
>>>
>>> Im including the configuration file i have and some packet dumps of the 
>>> calls.Thanks!
>>>
>>> debug=3
>>> fork=no
>>> log_stderror=yes
>>> listen=213.207.***.*** # put your server IP address here
>>> port=5060
>>> children=8
>>> dns=no
>>> rev_dns=no
>>> fifo="/tmp/ser_fifo"
>>> fifo_db_url="mysql://ser:********@localhost/ser"
>>>
>>> #KM added module
>>> loadmodule "/usr/lib/ser/modules/exec.so"
>>> loadmodule "/usr/lib/ser/modules/mysql.so"
>>> loadmodule "/usr/lib/ser/modules/sl.so"
>>> loadmodule "/usr/lib/ser/modules/tm.so"
>>> loadmodule "/usr/lib/ser/modules/rr.so"
>>> loadmodule "/usr/lib/ser/modules/maxfwd.so"
>>> loadmodule "/usr/lib/ser/modules/usrloc.so"
>>> loadmodule "/usr/lib/ser/modules/registrar.so"
>>> loadmodule "/usr/lib/ser/modules/auth.so"
>>> loadmodule "/usr/lib/ser/modules/auth_db.so"
>>> loadmodule "/usr/lib/ser/modules/uri.so"
>>> loadmodule "/usr/lib/ser/modules/uri_db.so"
>>> loadmodule "/usr/lib/ser/modules/mediaproxy.so"
>>> loadmodule "/usr/lib/ser/modules/nathelper.so"
>>> loadmodule "/usr/lib/ser/modules/textops.so"
>>> loadmodule "/usr/lib/ser/modules/avpops.so"
>>> loadmodule "/usr/lib/ser/modules/domain.so"
>>> loadmodule "/usr/lib/ser/modules/permissions.so"
>>>
>>> modparam("auth_db|permissions|uri_db|usrloc",
>>> "db_url", "mysql://ser:heslo@localhost/ser")
>>> modparam("auth_db", "calculate_ha1", 1)
>>> modparam("auth_db", "password_column", "password")
>>> modparam("nathelper", "rtpproxy_disable", 1)
>>> modparam("nathelper", "natping_interval", 0)
>>> modparam("mediaproxy","natping_interval", 30)
>>> modparam("mediaproxy","mediaproxy_socket", "/var/run/mediaproxy.sock")
>>> modparam("mediaproxy","sip_asymmetrics","/usr/etc/ser/sip-clients")
>>> modparam("mediaproxy","rtp_asymmetrics","/usr/etc/ser/rtp-clients")
>>> modparam("usrloc", "db_mode", 2)
>>> modparam("registrar", "nat_flag", 6)
>>> modparam("rr", "enable_full_lr", 1)
>>> #pstn part-----------------------------------------
>>> modparam("tm", "fr_inv_timer", 27)
>>> modparam("tm", "fr_inv_timer_avp", "inv_timeout")
>>> modparam("permissions", "db_mode", 1)
>>> modparam("permissions", "trusted_table", "trusted")
>>>
>>> route {
>>> # -----------------------------------------------------------------
>>> # Sanity Check Section
>>> # -----------------------------------------------------------------
>>> if (!mf_process_maxfwd_header("10")) {
>>> sl_send_reply("483", "Too Many Hops");
>>> break;
>>> };
>>> if (msg:len > max_len) {
>>> sl_send_reply("513", "Message Overflow");
>>> break;
>>> };
>>> # -----------------------------------------------------------------
>>> # Record Route Section
>>> # -----------------------------------------------------------------
>>> if (method=="INVITE" && client_nat_test("3")) {
>>> # INSERT YOUR IP ADDRESS HERE
>>> record_route_preset("213.207.***.***:5060;nat=yes");
>>> } else if (method!="REGISTER") {
>>> record_route();
>>> };
>>> # -----------------------------------------------------------------
>>> # Call Tear Down Section
>>> # -----------------------------------------------------------------
>>> if (method=="BYE" || method=="CANCEL") {
>>> end_media_session();
>>> };
>>> # -----------------------------------------------------------------
>>> # Loose Route Section
>>> # -----------------------------------------------------------------
>>> if (loose_route()) {
>>> if (has_totag() && (method=="INVITE" || method=="ACK")) {
>>> if (client_nat_test("3") || search("^Route:.*;nat=yes")) {
>>> setflag(6);
>>> use_media_proxy();
>>> #log(1,"route:NATED caller in loose route \n");
>>> };
>>> };
>>> route(1);
>>> break;
>>> };
>>> # -----------------------------------------------------------------
>>> # Call Type Processing Section
>>> # -----------------------------------------------------------------
>>> #Check if the target domain is one that the server is responsible for
>>> if (!is_uri_host_local()) {
>>> log(1,"Call type processing: Target domain is not in the domain pool 
>>> \n");
>>> #Check to see if the sender is in our own domain and allow messages from 
>>> pstn,pgw
>>> if (is_from_local() || allow_trusted()) {
>>> log(1,"Call type processing: Caller is local or trusted \n");
>>> route(4);
>>> route(1);
>>> } else {
>>> log(1,"Call type processing: 403 error \n");
>>> sl_send_reply("403", "Forbidden");
>>> };
>>> break;
>>> };
>>> if (method=="CANCEL") {
>>> route(1);
>>> break;
>>> } else if (method=="INVITE") {
>>> route(3);
>>> break;
>>> } else if (method=="REGISTER") {
>>> route(2);
>>> break;
>>> };
>>> lookup("aliases");
>>> if (uri!=myself) {
>>> route(4);
>>> route(1);
>>> break;
>>> };
>>> if (!lookup("location")) {
>>> sl_send_reply("404", "User Not Found");
>>> break;
>>> };
>>> route(1);
>>> }
>>> route[1] {
>>> # -----------------------------------------------------------------
>>> # Default Message Handler
>>> # -----------------------------------------------------------------
>>> t_on_reply("1");
>>> if (!t_relay()) {
>>> if (method=="INVITE" || method=="ACK") {
>>> end_media_session();
>>> };
>>> sl_reply_error();
>>> };
>>> }
>>> route[2] {
>>> # -----------------------------------------------------------------
>>> # REGISTER Message Handler
>>> # ----------------------------------------------------------------
>>> sl_send_reply("100", "Trying");
>>> if (!search("^Contact:[ ]*\*") && client_nat_test("7")) {
>>> setflag(6);
>>> fix_nated_register();
>>> force_rport();
>>> };
>>> if (!www_authorize("","subscriber")) {
>>> www_challenge("","0");
>>> break;
>>> };
>>> if (!check_to()) {
>>> sl_send_reply("401", "Unauthorized");
>>> break;
>>> };
>>> consume_credentials();
>>> if (!save("location")) {
>>> sl_reply_error();
>>> };
>>> }
>>> route[3] {
>>> # -----------------------------------------------------------------
>>> # INVITE Message Handler
>>> # -----------------------------------------------------------------
>>> log (1,"------------route[3]:INVITE handler \n");
>>> #if (allow_trusted()) {log(1,"------------route[3]:User is trusted\n");} 
>>> ;
>>> #check if NATed caller
>>> if (!search("^Contact:[ ]*\*") && client_nat_test("7")) {
>>> log (1,"------------route[3]:fixing NAT info \n");
>>> setflag(6);
>>> force_rport();
>>> fix_nated_contact();
>>> };
>>> if (!allow_trusted()) {
>>> if (!proxy_authorize("","subscriber")) {
>>> #log (1,"route[3]:User did not authorise! \n");
>>> proxy_challenge("","1");
>>> #log (1,"route[3]:Sent error 401");
>>> break;
>>> } else if (!check_from()) {
>>> log (1,"route[3]: 403 error \n");
>>> sl_send_reply("403", "Use From=ID");
>>> break;
>>> };
>>> log (1,"route[3]:Consuming credentials.....\n");
>>> consume_credentials();
>>> };
>>> if (client_nat_test("3")) {
>>> setflag(7);
>>> force_rport();
>>> };
>>> #Strip prefix 00357 , 357
>>> if (uri=~"^sip:00357[0-9]{8}@") {
>>> strip(5);
>>> }
>>> else if ( uri=~"^sip:357[0-9]{8}@") {
>>> strip(3);
>>> };
>>> lookup("aliases");
>>> if (uri!=myself) {
>>> route(4);
>>> route(1);
>>> break;
>>> };
>>> if (uri=~"^sip:00[1-9]*@") { # International PSTN 00*
>>> route(4);
>>> route(5);
>>> break;
>>> };
>>> if (!lookup("location")) {
>>> if (uri=~"^sip:[0-9]{8}@") { # Domestic PSTN 2???????
>>> route(4);
>>> route(5);
>>> break;
>>> };
>>> sl_send_reply("404", "User Not Found");
>>> break;
>>> };
>>> route(4);
>>> route(1);
>>> }
>>> route[4] {
>>> # -----------------------------------------------------------------
>>> # NAT Traversal Section
>>> # -----------------------------------------------------------------
>>> if (isflagset(6) || isflagset(7)) {
>>> use_media_proxy();
>>> };
>>> }
>>> route[5] {
>>> # -----------------------------------------------------------------
>>> # PSTN Handler
>>> # -----------------------------------------------------------------
>>> #Change the destination so it points to PGW
>>> rewritehost("213.207.***.***"); # INSERT YOUR PSTN GATEWAY IP ADDRESS
>>> avp_write("i:45", "inv_timeout");
>>> route(4);
>>> route(1);
>>> }
>>>
>>>
>>> onreply_route[1] {
>>> if ((isflagset(6) || isflagset(7)) && 
>>> (status=~"(180)|(183)|2[0-9][0-9]")) {
>>> if (!search("^Content-Length:[ ]*0")) {
>>> use_media_proxy();
>>> };
>>> };
>>> if (client_nat_test("1")) {
>>> fix_nated_contact();
>>> };
>>> }
>>>
>>>
>>>
>>>
>>> ====================================================================================================
>>> Packets for failed call behind NAT:
>>> ====================================================================================================
>>>
>>> ΤΓ²΅&#0;&#0;&#0;&#0;&#0;&#0;&#0;&#0;&#0;&#0;??&#0;&#0;&#0;&#0;&#0;
>>> ½qC~ΐ
>>> &#0;ζ&#0;&#0;ζ&#0;&#0;&#0;ώ-Bΰ&#0;LυE&#0;E&#0;Ψ&#0;D&#0;&#0;pΜΥΟ�²ΥΟ�³ΔΔΔ�&INVITE 
>>> sip:99389683 at 213.207.141.179 SIP/2.0
>>> Via: SIP/2.0/UDP 192.168.1.6:5060;branch=z9hG4bKfmqE9mAxO4AVb1rE
>>> Max-Forwards: 70
>>> User-Agent: PA168S
>>> From: "22000002" <sip:22000002 at 213.207.141.179>;tag=vW5KTCrnEpud7yyE
>>> To: "99389683" <sip:99389683 at 213.207.141.179>
>>> Call-ID: Ra1xPN5naYXRZN67 at 192.168.1.6
>>> Contact: <sip:22000002 at 192.168.1.6:5060>
>>> Proxy-Authorization: Digest username="22000002", 
>>> realm="213.207.141.179", 
>>> nonce="4371b5e37010200b061c47bdd2b9e553e3b7128a1", 
>>> uri="sip:99389683 at 213.207.141.179", qop=auth, nc=00000001, 
>>> cnonce="0a4f113b", response="805a849373492c421c9397d1621239b5"
>>> CSeq: 2 INVITE
>>> Content-Type: application/sdp
>>> Content-Length: 292
>>> v=0
>>> o=22000002 80268421 80523176 IN IP4 192.168.1.6
>>> s=SIP CALL
>>> c=IN IP4 192.168.1.6
>>> t=0 0
>>> m=audio 11722 RTP/AVP 18 4 0 8 3 97
>>> a=rtpmap:18 G729/8000
>>> a=rtpmap:4 G723/8000
>>> a=rtpmap:0 PCMU/8000
>>> a=rtpmap:8 PCMA/8000
>>> a=rtpmap:3 GSM/8000
>>> a=rtpmap:97 telephone-event/8000
>>> a=fmtp:97 0-15
>>>
>>> ½qCw
>>> zzLυE&#0;ώ-Bΰ&#0;El&#0;?@&#0;@pγΥΟ�³ΥΟ�²ΔΔXΙnSIP/2.0 100 
>>> trying --  your call is important to us
>>> Via: SIP/2.0/UDP 
>>> 192.168.1.6:5060;branch=z9hG4bKfmqE9mAxO4AVb1rE;rport=5060;received=213.207.141.178
>>> From: "22000002" <sip:22000002 at 213.207.141.179>;tag=vW5KTCrnEpud7yyE
>>> To: "99389683" <sip:99389683 at 213.207.141.179>
>>> Call-ID: Ra1xPN5naYXRZN67 at 192.168.1.6
>>> CSeq: 2 INVITE
>>> Server: Sip EXpress router (0.9.3 (i386/linux))
>>> Content-Length: 0
>>> Warning: 392 213.207.141.179:5060 "Noisy feedback tells: pid=8885 
>>> req_src_ip=213.207.141.178 req_src_port=5060 
>>> in_uri=sip:99389683 at 213.207.141.179 out_uri=sip:99389683 at 213.207.144.6 
>>> via_cnt==1"
>>>
>>> ½qCρ
>>> &#0;Δ&#0;&#0;Δ&#0;&#0;&#0;ΉR.�&#0;ώ-Bΰ&#0;E?&#0;�@&#0;@mDΥΟ�³ΥΟ�ΔΔΆΝ
>>> INVITE sip:99389683 at 213.207.144.6 SIP/2.0
>>> Record-Route: 
>>> <sip:99389683 at 213.207.141.179:5060;nat=yes;ftag=vW5KTCrnEpud7yyE;lr=on>
>>> Via: SIP/2.0/UDP 213.207.141.179;branch=z9hG4bK6f55.cba0c054.0
>>> Via: SIP/2.0/UDP 
>>> 192.168.1.6:5060;rport=5060;received=213.207.141.178;branch=z9hG4bKfmqE9mAxO4AVb1rE
>>> Max-Forwards: 16
>>> User-Agent: PA168S
>>> From: "22000002" <sip:22000002 at 213.207.141.179>;tag=vW5KTCrnEpud7yyE
>>> To: "99389683" <sip:99389683 at 213.207.141.179>
>>> Call-ID: Ra1xPN5naYXRZN67 at 192.168.1.6
>>> Contact: <sip:22000002 at 213.207.141.178:5060>
>>> CSeq: 2 INVITE
>>> Content-Type: application/sdp
>>> Content-Length: 316
>>> v=0
>>> o=22000002 80268421 80523176 IN IP4 192.168.1.6
>>> s=SIP CALL
>>> c=IN IP4 213.207.141.179213.207.141.179
>>> t=0 0
>>> m=audio 3506435064 RTP/AVP 18 4 0 8 3 97
>>> a=rtpmap:18 G729/8000
>>> a=rtpmap:4 G723/8000
>>> a=rtpmap:0 PCMU/8000
>>> a=rtpmap:8 PCMA/8000
>>> a=rtpmap:3 GSM/8000
>>> a=rtpmap:97 telephone-event/8000
>>> a=fmtp:97 0-15
>>>
>>> ½qCy1
>>> Δ&#0;&#0;Δ&#0;&#0;&#0;ΉR.�&#0;ώ-Bΰ&#0;E?<@@mCΥΟ�³ΥΟ�ΔΔΆΝ
>>> INVITE sip:99389683 at 213.207.144.6 SIP/2.0
>>> Record-Route: 
>>> <sip:99389683 at 213.207.141.179:5060;nat=yes;ftag=vW5KTCrnEpud7yyE;lr=on>
>>> Via: SIP/2.0/UDP 213.207.141.179;branch=z9hG4bK6f55.cba0c054.0
>>> Via: SIP/2.0/UDP 
>>> 192.168.1.6:5060;rport=5060;received=213.207.141.178;branch=z9hG4bKfmqE9mAxO4AVb1rE
>>> Max-Forwards: 16
>>> User-Agent: PA168S
>>> From: "22000002" <sip:22000002 at 213.207.141.179>;tag=vW5KTCrnEpud7yyE
>>> To: "99389683" <sip:99389683 at 213.207.141.179>
>>> Call-ID: Ra1xPN5naYXRZN67 at 192.168.1.6
>>> Contact: <sip:22000002 at 213.207.141.178:5060>
>>> CSeq: 2 INVITE
>>> Content-Type: application/sdp
>>> Content-Length: 316
>>> v=0
>>> o=22000002 80268421 80523176 IN IP4 192.168.1.6
>>> s=SIP CALL
>>> c=IN IP4 213.207.141.179213.207.141.179
>>> t=0 0
>>> m=audio 3506435064 RTP/AVP 18 4 0 8 3 97
>>> a=rtpmap:18 G729/8000
>>> a=rtpmap:4 G723/8000
>>> a=rtpmap:0 PCMU/8000
>>> a=rtpmap:8 PCMA/8000
>>> a=rtpmap:3 GSM/8000
>>> a=rtpmap:97 telephone-event/8000
>>> a=fmtp:97 0-15
>>>
>>> ½qCh 
>>> ΄&#0;&#0;΄&#0;&#0;&#0;ώ-Bΰ&#0;ΉR.�&#0;E&#0;¦f~@&#0;ϋNoΥΟ�ΥΟ�³ΔΔ'^ 
>>> SIP/2.0 100 Trying
>>> Via: SIP/2.0/UDP 213.207.141.179;branch=z9hG4bK6f55.cba0c054.0
>>> Via: SIP/2.0/UDP 
>>> 192.168.1.6:5060;rport=5060;received=213.207.141.178;branch=z9hG4bKfmqE9mAxO4AVb1rE
>>> From: "22000002" <sip:22000002 at 213.207.141.179>;tag=vW5KTCrnEpud7yyE
>>> To: "99389683" <sip:99389683 at 213.207.141.179>;tag=1367353431
>>> Call-ID: Ra1xPN5naYXRZN67 at 192.168.1.6
>>> CSeq: 2 INVITE
>>> Content-Length: 0
>>>
>>> ½qC�ο&#0;&#0;΄&#0;&#0;΄&#0;&#0;&#0;ώ-Bΰ&#0;ΉR.�&#0;E&#0;¦f@&#0;ϋNnΥΟ�ΥΟ�³ΔΔ'^ 
>>> SIP/2.0 100 Trying
>>> Via: SIP/2.0/UDP 213.207.141.179;branch=z9hG4bK6f55.cba0c054.0
>>> Via: SIP/2.0/UDP 
>>> 192.168.1.6:5060;rport=5060;received=213.207.141.178;branch=z9hG4bKfmqE9mAxO4AVb1rE
>>> From: "22000002" <sip:22000002 at 213.207.141.179>;tag=vW5KTCrnEpud7yyE
>>> To: "99389683" <sip:99389683 at 213.207.141.179>;tag=1367353431
>>> Call-ID: Ra1xPN5naYXRZN67 at 192.168.1.6
>>> CSeq: 2 INVITE
>>> Content-Length: 0
>>>
>>> ½qCΎΊ&#0;ξ&#0;&#0;ξ&#0;&#0;&#0;ώ-Bΰ&#0;ΉR.�&#0;E&#0;ΰf?@ϋN3ΥΟ�ΥΟ�³ΔΔΜ"SIP/2.0 
>>> 503 Service Unavailable
>>> Via: SIP/2.0/UDP 213.207.141.179;branch=z9hG4bK6f55.cba0c054.0
>>> Via: SIP/2.0/UDP 
>>> 192.168.1.6:5060;rport=5060;received=213.207.141.178;branch=z9hG4bKfmqE9mAxO4AVb1rE
>>> From: "22000002" <sip:22000002 at 213.207.141.179>;tag=vW5KTCrnEpud7yyE
>>> To: "99389683" <sip:99389683 at 213.207.141.179>;tag=1367353431
>>> Call-ID: Ra1xPN5naYXRZN67 at 192.168.1.6
>>> CSeq: 2 INVITE
>>> Contact: <sip:99389683 at 213.207.144.6:5060>
>>> Content-Length: 0
>>>
>>> ½qCe»""ΉR.�&#0;ώ-Bΰ&#0;E.&#0;�@&#0;@osΥΟ�³ΥΟ�ΔΔqΚΫACK 
>>> sip:99389683 at 213.207.144.6 SIP/2.0
>>> Via: SIP/2.0/UDP 213.207.141.179;branch=z9hG4bK6f55.cba0c054.0
>>> From: "22000002" <sip:22000002 at 213.207.141.179>;tag=vW5KTCrnEpud7yyE
>>> Call-ID: Ra1xPN5naYXRZN67 at 192.168.1.6
>>> To: "99389683" <sip:99389683 at 213.207.141.179>;tag=1367353431
>>> CSeq: 2 ACK
>>> User-Agent: Sip EXpress router(0.9.3 (i386/linux))
>>> Content-Length: 0
>>>
>>> ½qC>»RRLυE&#0;ώ-Bΰ&#0;E �@@q«ΥΟ�³ΥΟ�²ΔΔ�ΘΆSIP/2.0 503 
>>> Service Unavailable
>>> Via: SIP/2.0/UDP 
>>> 192.168.1.6:5060;rport=5060;received=213.207.141.178;branch=z9hG4bKfmqE9mAxO4AVb1rE
>>> From: "22000002" <sip:22000002 at 213.207.141.179>;tag=vW5KTCrnEpud7yyE
>>> To: "99389683" <sip:99389683 at 213.207.141.179>;tag=1367353431
>>> Call-ID: Ra1xPN5naYXRZN67 at 192.168.1.6
>>> CSeq: 2 INVITE
>>> Contact: <sip:99389683 at 213.207.144.6:5060>
>>> Content-Length: 0
>>>
>>> ½qCn�&#0;?&#0;&#0;?&#0;&#0;&#0;ώ-Bΰ&#0;LυE&#0;E&#0;�&#0;E&#0;&#0;r 
>>> ΥΟ�²ΥΟ�³ΔΔ�"ACK sip:99389683 at 213.207.141.179 SIP/2.0
>>> Via: SIP/2.0/UDP 192.168.1.6:5060;branch=z9hG4bKfmqE9mAxO4AVb1rE
>>> Max-Forwards: 70
>>> User-Agent: PA168S
>>> From: "22000002" <sip:22000002 at 213.207.141.179>;tag=vW5KTCrnEpud7yyE
>>> To: "99389683" <sip:99389683 at 213.207.141.179>;tag=1367353431
>>> Call-ID: Ra1xPN5naYXRZN67 at 192.168.1.6
>>> Contact: <sip:22000002 at 192.168.1.6:5060>
>>> Proxy-Authorization: Digest username="22000002", 
>>> realm="213.207.141.179", 
>>> nonce="4371be370510200b061c47bdd2b9e553e3b7128a1", 
>>> uri="sip:99389683 at 213.207.141.179", qop=auth, nc=00000001, 
>>> cnonce="0a4f113b", response="805a849373492c421c9397d1621239b5"
>>> CSeq: 2 ACK
>>> Content-Length: 0
>>>
>>> ½qCΕ8
>>> &#0;RRLυE&#0;ώ-Bΰ&#0;E &#0;�@&#0;@q?ΥΟ�³ΥΟ�²ΔΔ�ΘΆSIP/2.0 503 
>>> Service Unavailable
>>> Via: SIP/2.0/UDP 
>>> 192.168.1.6:5060;rport=5060;received=213.207.141.178;branch=z9hG4bKfmqE9mAxO4AVb1rE
>>> From: "22000002" <sip:22000002 at 213.207.141.179>;tag=vW5KTCrnEpud7yyE
>>> To: "99389683" <sip:99389683 at 213.207.141.179>;tag=1367353431
>>> Call-ID: Ra1xPN5naYXRZN67 at 192.168.1.6
>>> CSeq: 2 INVITE
>>> Contact: <sip:99389683 at 213.207.144.6:5060>
>>> Content-Length: 0
>>>
>>> ½qCγέ
>>> &#0;?&#0;&#0;?&#0;&#0;&#0;ώ-Bΰ&#0;LυE&#0;E&#0;�&#0;F&#0;&#0;rΥΟ�²ΥΟ�³ΔΔ�"ACK 
>>> sip:99389683 at 213.207.141.179 SIP/2.0
>>> Via: SIP/2.0/UDP 192.168.1.6:5060;branch=z9hG4bKfmqE9mAxO4AVb1rE
>>> Max-Forwards: 70
>>> User-Agent: PA168S
>>> From: "22000002" <sip:22000002 at 213.207.141.179>;tag=vW5KTCrnEpud7yyE
>>> To: "99389683" <sip:99389683 at 213.207.141.179>;tag=1367353431
>>> Call-ID: Ra1xPN5naYXRZN67 at 192.168.1.6
>>> Contact: <sip:22000002 at 192.168.1.6:5060>
>>> Proxy-Authorization: Digest username="22000002", 
>>> realm="213.207.141.179", 
>>> nonce="4371be370105200b061c47bdd2b9e553e3b7128a1", 
>>> uri="sip:99389683 at 213.207.141.179", qop=auth, nc=00000001, 
>>> cnonce="0a4f113b", response="805a849373492c421c9397d1621239b5"
>>> CSeq: 2 ACK
>>> Content-Length: 0
>>> ½qC3G
>>> RRLυE&#0;ώ-Bΰ&#0;E �@@q©ΥΟ�³ΥΟ�²ΔΔ�ΘΆSIP/2.0 503 Service 
>>> Unavailable
>>> Via: SIP/2.0/UDP 
>>> 192.168.1.6:5060;rport=5060;received=213.207.141.178;branch=z9hG4bKfmqE9mAxO4AVb1rE
>>> From: "22000002" <sip:22000002 at 213.207.141.179>;tag=vW5KTCrnEpud7yyE
>>> To: "99389683" <sip:99389683 at 213.207.141.179>;tag=1367353431
>>> Call-ID: Ra1xPN5naYXRZN67 at 192.168.1.6
>>> CSeq: 2 INVITE
>>> Contact: <sip:99389683 at 213.207.144.6:5060>
>>> Content-Length: 0
>>> ½qC.κ
>>> &#0;?&#0;&#0;?&#0;&#0;&#0;ώ-Bΰ&#0;LυE&#0;E&#0;�&#0;G&#0;&#0;rΥΟ�²ΥΟ�³ΔΔ�"ACK 
>>> sip:99389683 at 213.207.141.179 SIP/2.0
>>> Via: SIP/2.0/UDP 192.168.1.6:5060;branch=z9hG4bKfmqE9mAxO4AVb1rE
>>> Max-Forwards: 70
>>> User-Agent: PA168S
>>> From: "22000002" <sip:22000002 at 213.207.141.179>;tag=vW5KTCrnEpud7yyE
>>> To: "99389683" <sip:99389683 at 213.207.141.179>;tag=1367353431
>>> Call-ID: Ra1xPN5naYXRZN67 at 192.168.1.6
>>> Contact: <sip:22000002 at 192.168.1.6:5060>
>>> Proxy-Authorization: Digest username="22000002", 
>>> realm="213.207.141.179", 
>>> nonce="4371be370102005b061c47bdd2b9e553e3b7128a1", 
>>> uri="sip:99389683 at 213.207.141.179", qop=auth, nc=00000001, 
>>> cnonce="0a4f113b", response="805a849373492c421c9397d1621239b5"
>>> CSeq: 2 ACK
>>> Content-Length: 0
>>> ½qCd
>>> RRLυE&#0;ώ-Bΰ&#0;E �@@q¨ΥΟ�³ΥΟ�²ΔΔ�ΘΆSIP/2.0 503 Service 
>>> Unavailable
>>> Via: SIP/2.0/UDP 
>>> 192.168.1.6:5060;rport=5060;received=213.207.141.178;branch=z9hG4bKfmqE9mAxO4AVb1rE
>>> From: "22000002" <sip:22000002 at 213.207.141.179>;tag=vW5KTCrnEpud7yyE
>>> To: "99389683" <sip:99389683 at 213.207.141.179>;tag=1367353431
>>> Call-ID: Ra1xPN5naYXRZN67 at 192.168.1.6
>>> CSeq: 2 INVITE
>>> Contact: <sip:99389683 at 213.207.144.6:5060>
>>> Content-Length: 0
>>> ½qCA&#0;?&#0;&#0;?&#0;&#0;&#0;ώ-Bΰ&#0;LυE&#0;E&#0;�&#0;H&#0;&#0;rΥΟ�²ΥΟ�³ΔΔ�"ACK 
>>> sip:99389683 at 213.207.141.179 SIP/2.0
>>> Via: SIP/2.0/UDP 192.168.1.6:5060;branch=z9hG4bKfmqE9mAxO4AVb1rE
>>> Max-Forwards: 70
>>> User-Agent: PA168S
>>> From: "22000002" <sip:22000002 at 213.207.141.179>;tag=vW5KTCrnEpud7yyE
>>> To: "99389683" <sip:99389683 at 213.207.141.179>;tag=1367353431
>>> Call-ID: Ra1xPN5naYXRZN67 at 192.168.1.6
>>> Contact: <sip:22000002 at 192.168.1.6:5060>
>>> Proxy-Authorization: Digest username="22000002", 
>>> realm="213.207.141.179", 
>>> nonce="4371be370102005b061c47bdd2b9e553e3b7128a1", 
>>> uri="sip:99389683 at 213.207.141.179", qop=auth, nc=00000001, 
>>> cnonce="0a4f113b", response="805a849373492c421c9397d1621239b5"
>>> CSeq: 2 ACK
>>> Content-Length: 0
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> ====================================================================================================
>>> Packets for successful call from public IP:
>>> ====================================================================================================
>>> ΤΓ²΅&#0;&#0;&#0;&#0;&#0;&#0;&#0;&#0;&#0;&#0;??&#0;&#0;&#0;&#0;&#0;½qCjlΏ&#0;&#0;Ώ&#0;&#0;&#0;ώ-Bΰ&#0;ΪβΗ&#0;Eh±%*ϊΟ΅ΥΟ�?ΥΟ�³ΔΔ��ίINVITE 
>>> sip:22372673 at 213.207.141.179 SIP/2.0
>>>
>>> Via: SIP/2.0/UDP 213.207.141.181:5060;branch=z9hG4bK-896914ce
>>>
>>> From: Kyriakos <sip:22000001 at 213.207.141.179>;tag=2f2e13766c08ee3ao0
>>>
>>> To: <sip:22372673 at 213.207.141.179>
>>>
>>> Call-ID: fa843926-7b99844a at 213.207.141.181
>>>
>>> CSeq: 102 INVITE
>>>
>>> Max-Forwards: 70
>>>
>>> Proxy-Authorization: Digest 
>>> username="22000001",realm="213.207.141.179",nonce="4371be42f095d84938c2b65fb9b1d879749453b6e",uri="sip:22372673 at 213.207.141.179",algorithm=MD5,response="cf863bab65ffbaf6376746eb76cd127c",qop=auth,nc=00000001,cnonce="32d92d6b"
>>>
>>> Contact: Kyriakos <sip:22000001 at 213.207.141.181:5060>
>>>
>>> Expires: 240
>>>
>>> User-Agent: Sipura/SPA841-3.1.1(a)
>>>
>>> Content-Length: 403
>>>
>>> Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER
>>>
>>> Content-Type: application/sdp
>>>
>>> v=0
>>>
>>> o=- 8038585 8038585 IN IP4 213.207.141.181
>>>
>>> s=-
>>>
>>> c=IN IP4 213.207.141.181
>>>
>>> t=0 0
>>>
>>> m=audio 16460 RTP/AVP 0 2 4 8 18 96 97 98 101
>>>
>>> a=rtpmap:0 PCMU/8000
>>>
>>> a=rtpmap:2 G726-32/8000
>>>
>>> a=rtpmap:4 G723/8000
>>>
>>> a=rtpmap:8 PCMA/8000
>>>
>>> a=rtpmap:18 G729a/8000
>>>
>>> a=rtpmap:96 G726-40/8000
>>>
>>> a=rtpmap:97 G726-24/8000
>>>
>>> a=rtpmap:98 G726-16/8000
>>>
>>> a=rtpmap:101 telephone-event/8000
>>>
>>> a=fmtp:101 0-15
>>>
>>> a=ptime:30
>>>
>>> a=sendrecv
>>>
>>> ½qCoOOΪβΗ&#0;ώ-Bΰ&#0;EA&#0;'@&#0;@qΥΟ�³ΥΟ�?ΔΔ-ΙFSIP/2.0 100 
>>> trying -- your call is important to us
>>>
>>> Via: SIP/2.0/UDP 213.207.141.181:5060;branch=z9hG4bK-896914ce
>>>
>>> From: Kyriakos <sip:22000001 at 213.207.141.179>;tag=2f2e13766c08ee3ao0
>>>
>>> To: <sip:22372673 at 213.207.141.179>
>>>
>>> Call-ID: fa843926-7b99844a at 213.207.141.181
>>>
>>> CSeq: 102 INVITE
>>>
>>> Server: Sip EXpress router (0.9.3 (i386/linux))
>>>
>>> Content-Length: 0
>>>
>>> Warning: 392 213.207.141.179:5060 "Noisy feedback tells: pid=8885 
>>> req_src_ip=213.207.141.181 req_src_port=5060 
>>> in_uri=sip:22372673 at 213.207.141.179 out_uri=sip:22372673 at 213.207.144.6 
>>> via_cnt==1"
>>>
>>> ½qC[oAAΉR.�&#0;ώ-Bΰ&#0;E3&#0;"@&#0;@lΎΥΟ�³ΥΟ�ΔΔΝ?INVITE 
>>> sip:22372673 at 213.207.144.6 SIP/2.0
>>>
>>> Record-Route: <sip:213.207.141.179;ftag=2f2e13766c08ee3ao0;lr=on>
>>>
>>> Via: SIP/2.0/UDP 213.207.141.179;branch=z9hG4bKc56.673dbf01.0
>>>
>>> Via: SIP/2.0/UDP 213.207.141.181:5060;branch=z9hG4bK-896914ce
>>>
>>> From: Kyriakos <sip:22000001 at 213.207.141.179>;tag=2f2e13766c08ee3ao0
>>>
>>> To: <sip:22372673 at 213.207.141.179>
>>>
>>> Call-ID: fa843926-7b99844a at 213.207.141.181
>>>
>>> CSeq: 102 INVITE
>>>
>>> Max-Forwards: 16
>>>
>>> Contact: Kyriakos <sip:22000001 at 213.207.141.181:5060>
>>>
>>> Expires: 240
>>>
>>> User-Agent: Sipura/SPA841-3.1.1(a)
>>>
>>> Content-Length: 403
>>>
>>> Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER
>>>
>>> Content-Type: application/sdp
>>>
>>> v=0
>>>
>>> o=- 8038585 8038585 IN IP4 213.207.141.181
>>>
>>> s=-
>>>
>>> c=IN IP4 213.207.141.181
>>>
>>> t=0 0
>>>
>>> m=audio 16460 RTP/AVP 0 2 4 8 18 96 97 98 101
>>>
>>> a=rtpmap:0 PCMU/8000
>>>
>>> a=rtpmap:2 G726-32/8000
>>>
>>> a=rtpmap:4 G723/8000
>>>
>>> a=rtpmap:8 PCMA/8000
>>>
>>> a=rtpmap:18 G729a/8000
>>>
>>> a=rtpmap:96 G726-40/8000
>>>
>>> a=rtpmap:97 G726-24/8000
>>>
>>> a=rtpmap:98 G726-16/8000
>>>
>>> a=rtpmap:101 telephone-event/8000
>>>
>>> a=fmtp:101 0-15
>>>
>>> a=ptime:30
>>>
>>> a=sendrecv
>>>
>>> ½qCΏα&#0;�&#0;&#0;�&#0;&#0;&#0;ώ-Bΰ&#0;ΉR.�&#0;E&#0;zf�@&#0;ϋN�ΥΟ�ΥΟ�³ΔΔf"QSIP/2.0 
>>> 100 Trying
>>>
>>> Via: SIP/2.0/UDP 213.207.141.179;branch=z9hG4bKc56.673dbf01.0
>>>
>>> Via: SIP/2.0/UDP 213.207.141.181:5060;branch=z9hG4bK-896914ce
>>>
>>> From: Kyriakos <sip:22000001 at 213.207.141.179>;tag=2f2e13766c08ee3ao0
>>>
>>> To: <sip:22372673 at 213.207.141.179>;tag=1367353431
>>>
>>> Call-ID: fa843926-7b99844a at 213.207.141.181
>>>
>>> CSeq: 102 INVITE
>>>
>>> Content-Length: 0
>>>
>>>
>>>
>>> _______________________________________________
>>> Serusers mailing list
>>> serusers at lists.iptel.org
>>> http://lists.iptel.org/mailman/listinfo/serusers
>>>
>>
>> _______________________________________________
>> Serusers mailing list
>> serusers at lists.iptel.org
>> http://lists.iptel.org/mailman/listinfo/serusers
>>
>>
>
>

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