[Users] NAT+uac_replace_from

unplug maillisting at gmail.com
Wed Jan 4 11:21:36 CET 2006 

Actually, I am replacing the username of the uri with the alias that
stored in the database.  In my configuration file, it is using
mediaproxy for NAT function (features-callfwd.5.0.cfg from getting
started). I also add the following codes in the very first of the
route routine for alias replacing purpose.

route {
...
        if (!has_totag() && method=="INVITE") {
          if (avp_db_load("$from/uri","s:alias")) {
                xlog("L_INFO","sip408: have alias - [$avp(s:alias)]\n");
                uac_replace_from("anonymous","sip:$avp(s:alias)@$si");
          } else {
                xlog("L_INFO","sip411: no alias\n");
          };
        };
...
}

When I make a call from a phone to the PSTN phone, the caller drops
the ring when the callee rings.  Callee hangs up and callee rings
again few seconds after.  You can find an error message "SIP/2.0 481
Call Leg/Transaction Does Not Exist" in line 180.  I wonder if there
is any thing wrong with the above code or my concept is wrong.  Please
help.  Below is the sip message.

interface: any
filter: (ip) and ( port 5060 )
#
U 10.0.0.46:5060 -> 10.0.0.27:5060
INVITE sip:34163634 at 10.0.0.27 SIP/2.0.
Via: SIP/2.0/UDP 10.0.0.46:5060;branch=z9hG4bKeKunMgjqbhggzOxi.
Max-Forwards: 70.
User-Agent: Koncept KE10XX v4.32.05 00-09-45-0a-fc-2d.
From: "9000" <sip:9000 at 10.0.0.27>;tag=l7473818dCOs9ZMG.
To: "34163634" <sip:34163634 at 10.0.0.27>.
Call-ID: wVhSdbheOYfdmQmf at 10.0.0.46.
Contact: <sip:9000 at 10.0.0.46:5060>.
CSeq: 1 INVITE.
Supported: 100rel, replaces.
Content-Type: application/sdp.
Content-Length: 286.
.
v=0.
o=9000 58685689 12166570 IN IP4 10.0.0.46.
s=SIP CALL.
c=IN IP4 10.0.0.46.
t=0 0.
m=audio 6000 RTP/AVP 18 3 0 8 4 101.
a=rtpmap:18 G729/8000.
a=rtpmap:3 GSM/8000.
a=rtpmap:0 PCMU/8000.
a=rtpmap:8 PCMA/8000.
a=rtpmap:4 G723/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-15.

#
U 10.0.0.27:5060 -> 10.0.0.46:5060
SIP/2.0 100 trying -- your call is important to us.
Via: SIP/2.0/UDP 10.0.0.46:5060;branch=z9hG4bKeKunMgjqbhggzOxi;rport=5060.
From: "9000" <sip:9000 at 10.0.0.27>;tag=l7473818dCOs9ZMG.
To: "34163634" <sip:34163634 at 10.0.0.27>.
Call-ID: wVhSdbheOYfdmQmf at 10.0.0.46.
CSeq: 1 INVITE.
Server: OpenSer (1.0.0 (i386/linux)).
Content-Length: 0.
Warning: 392 10.0.0.27:5060 "Noisy feedback tells:  pid=3353
req_src_ip=10.0.0.46 req_src_port=5060 in_uri=sip:34163634 at 10.0.0.27
out_uri=sip:934163634 at 10.30.0.248 via_cnt==1".
.

#
U 10.0.0.27:5060 -> 10.30.0.248:5060
INVITE sip:934163634 at 10.30.0.248 SIP/2.0.
Record-Route: <sip:34163634 at 10.0.0.27:5060;nat=yes;ftag=l7473818dCOs9ZMG;lr=on>.
Via: SIP/2.0/UDP 10.0.0.27;branch=z9hG4bK0d2f.18572a04.0.
Via: SIP/2.0/UDP 10.0.0.46:5060;rport=5060;branch=z9hG4bKeKunMgjqbhggzOxi.
Max-Forwards: 69.
User-Agent: Koncept KE10XX v4.32.05 00-09-45-0a-fc-2d.
From:  "anonymous"<sip:36418473 at 10.0.0.46>;tag=l7473818dCOs9ZMG.
To: "34163634" <sip:34163634 at 10.0.0.27>.
Call-ID: wVhSdbheOYfdmQmf at 10.0.0.46.
Contact: <sip:9000 at 10.0.0.46:5060>.
CSeq: 1 INVITE.
Supported: 100rel, replaces.
Content-Type: application/sdp.
Content-Length: 287.
.
v=0.
o=9000 58685689 12166570 IN IP4 10.0.0.46.
s=SIP CALL.
c=IN IP4 10.0.0.27.
t=0 0.
m=audio 35540 RTP/AVP 18 3 0 8 4 101.
a=rtpmap:18 G729/8000.
a=rtpmap:3 GSM/8000.
a=rtpmap:0 PCMU/8000.
a=rtpmap:8 PCMA/8000.
a=rtpmap:4 G723/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-15.

#
U 10.30.0.248:5060 -> 10.0.0.27:5060
SIP/2.0 100 Trying.
Via: SIP/2.0/UDP 10.0.0.27;branch=z9hG4bK0d2f.18572a04.0,SIP/2.0/UDP
10.0.0.46:5060;rport=5060;branch=z9hG4bKeKunMgjqbhggzOxi.
From: "anonymous"<sip:36418473 at 10.0.0.46>;tag=l7473818dCOs9ZMG.
To: "34163634" <sip:34163634 at 10.0.0.27>;tag=1EBAD768-B8F.
Date: Wed, 04 Jan 2006 09:15:35 GMT.
Call-ID: wVhSdbheOYfdmQmf at 10.0.0.46.
Server: Cisco-SIPGateway/IOS-12.x.
CSeq: 1 INVITE.
Allow-Events: telephone-event.
Content-Length: 0.
.

#
U 10.30.0.248:5060 -> 10.0.0.27:5060
SIP/2.0 183 Session Progress.
Via: SIP/2.0/UDP 10.0.0.27;branch=z9hG4bK0d2f.18572a04.0,SIP/2.0/UDP
10.0.0.46:5060;rport=5060;branch=z9hG4bKeKunMgjqbhggzOxi.
From: "anonymous"<sip:36418473 at 10.0.0.46>;tag=l7473818dCOs9ZMG.
To: "34163634" <sip:34163634 at 10.0.0.27>;tag=1EBAD768-B8F.
Date: Wed, 04 Jan 2006 09:15:35 GMT.
Call-ID: wVhSdbheOYfdmQmf at 10.0.0.46.
Server: Cisco-SIPGateway/IOS-12.x.
CSeq: 1 INVITE.
Require: 100rel.
RSeq: 1250.
Allow-Events: telephone-event.
Contact: <sip:934163634 at 10.30.0.248:5060>.
Record-Route: <sip:34163634 at 10.0.0.27:5060;nat=yes;ftag=l7473818dCOs9ZMG;lr=on>.
Content-Type: application/sdp.
Content-Disposition: session;handling=required.
Content-Length: 177.
.
v=0.
o=CiscoSystemsSIP-GW-UserAgent 584 9780 IN IP4 10.30.0.248.
s=SIP Call.
c=IN IP4 10.30.0.248.
t=0 0.
m=audio 17340 RTP/AVP 18.
a=rtpmap:18 G729/8000.
a=fmtp:18 annexb=yes.

#
U 10.0.0.27:5060 -> 10.0.0.46:5060
SIP/2.0 183 Session Progress.
Via: SIP/2.0/UDP 10.0.0.46:5060;rport=5060;branch=z9hG4bKeKunMgjqbhggzOxi.
From: "9000" <sip:9000 at 10.0.0.27>;tag=l7473818dCOs9ZMG.
To: "34163634" <sip:34163634 at 10.0.0.27>;tag=1EBAD768-B8F.
Date: Wed, 04 Jan 2006 09:15:35 GMT.
Call-ID: wVhSdbheOYfdmQmf at 10.0.0.46.
Server: Cisco-SIPGateway/IOS-12.x.
CSeq: 1 INVITE.
Require: 100rel.
RSeq: 1250.
Allow-Events: telephone-event.
Contact: <sip:934163634 at 10.30.0.248:5060>.
Record-Route: <sip:34163634 at 10.0.0.27:5060;nat=yes;ftag=l7473818dCOs9ZMG;lr=on>.
Content-Type: application/sdp.
Content-Disposition: session;handling=required.
Content-Length: 175.
.
v=0.
o=CiscoSystemsSIP-GW-UserAgent 584 9780 IN IP4 10.30.0.248.
s=SIP Call.
c=IN IP4 10.0.0.27.
t=0 0.
m=audio 35540 RTP/AVP 18.
a=rtpmap:18 G729/8000.
a=fmtp:18 annexb=yes.

#
U 10.0.0.46:5060 -> 10.0.0.27:5060
PRACK sip:934163634 at 10.30.0.248:5060 SIP/2.0.
Via: SIP/2.0/UDP 10.0.0.46:5060;branch=z9hG4bK8UeWxCfGrMJSO66f.
Route: <sip:34163634 at 10.0.0.27:5060;nat=yes;ftag=l7473818dCOs9ZMG;lr=on>.
Max-Forwards: 70.
User-Agent: Koncept KE10XX v4.32.05 00-09-45-0a-fc-2d.
From: "9000" <sip:9000 at 10.0.0.27>;tag=l7473818dCOs9ZMG.
To: "34163634" <sip:34163634 at 10.0.0.27>;tag=1EBAD768-B8F.
Call-ID: wVhSdbheOYfdmQmf at 10.0.0.46.
Contact: <sip:9000 at 10.0.0.46:5060>.
CSeq: 2 PRACK.
RAck: 1250 1 INVITE.
Content-Length: 0.
.

#
U 10.0.0.27:5060 -> 10.30.0.248:5060
PRACK sip:934163634 at 10.30.0.248:5060 SIP/2.0.
Record-Route: <sip:10.0.0.27;ftag=l7473818dCOs9ZMG;lr=on>.
Via: SIP/2.0/UDP 10.0.0.27;branch=z9hG4bKdc2f.dbee15d1.0.
Via: SIP/2.0/UDP 10.0.0.46:5060;branch=z9hG4bK8UeWxCfGrMJSO66f.
Max-Forwards: 69.
User-Agent: Koncept KE10XX v4.32.05 00-09-45-0a-fc-2d.
From: "9000" <sip:9000 at 10.0.0.27>;tag=l7473818dCOs9ZMG.
To: "34163634" <sip:34163634 at 10.0.0.27>;tag=1EBAD768-B8F.
Call-ID: wVhSdbheOYfdmQmf at 10.0.0.46.
Contact: <sip:9000 at 10.0.0.46:5060>.
CSeq: 2 PRACK.
RAck: 1250 1 INVITE.
Content-Length: 0.
.

#----------------------------------line 180 --------------------------
U 10.30.0.248:5060 -> 10.0.0.27:5060
SIP/2.0 481 Call Leg/Transaction Does Not Exist.
Via: SIP/2.0/UDP 10.0.0.27;branch=z9hG4bKdc2f.dbee15d1.0,SIP/2.0/UDP
10.0.0.46:5060;branch=z9hG4bK8UeWxCfGrMJSO66f.
From: "9000" <sip:9000 at 10.0.0.27>;tag=l7473818dCOs9ZMG.
To: "34163634" <sip:34163634 at 10.0.0.27>;tag=1EBAD768-B8F.
Call-ID: wVhSdbheOYfdmQmf at 10.0.0.46.
CSeq: 2 PRACK.
Content-Length: 0.
.

#
U 10.0.0.27:5060 -> 10.0.0.46:5060
SIP/2.0 481 Call Leg/Transaction Does Not Exist.
Via: SIP/2.0/UDP 10.0.0.46:5060;branch=z9hG4bK8UeWxCfGrMJSO66f.
From: "9000" <sip:9000 at 10.0.0.27>;tag=l7473818dCOs9ZMG.
To: "34163634" <sip:34163634 at 10.0.0.27>;tag=1EBAD768-B8F.
Call-ID: wVhSdbheOYfdmQmf at 10.0.0.46.
CSeq: 2 PRACK.
Content-Length: 0.
.

#
U 10.30.0.248:5060 -> 10.0.0.27:5060
SIP/2.0 183 Session Progress.
Via: SIP/2.0/UDP 10.0.0.27;branch=z9hG4bK0d2f.18572a04.0,SIP/2.0/UDP
10.0.0.46:5060;rport=5060;branch=z9hG4bKeKunMgjqbhggzOxi.
From: "anonymous"<sip:36418473 at 10.0.0.46>;tag=l7473818dCOs9ZMG.
To: "34163634" <sip:34163634 at 10.0.0.27>;tag=1EBAD768-B8F.
Date: Wed, 04 Jan 2006 09:15:35 GMT.
Call-ID: wVhSdbheOYfdmQmf at 10.0.0.46.
Server: Cisco-SIPGateway/IOS-12.x.
CSeq: 1 INVITE.
Require: 100rel.
RSeq: 1250.
Allow-Events: telephone-event.
Contact: <sip:934163634 at 10.30.0.248:5060>.
Record-Route: <sip:34163634 at 10.0.0.27:5060;nat=yes;ftag=l7473818dCOs9ZMG;lr=on>.
Content-Type: application/sdp.
Content-Disposition: session;handling=required.
Content-Length: 177.
.
v=0.
o=CiscoSystemsSIP-GW-UserAgent 584 9780 IN IP4 10.30.0.248.
s=SIP Call.
c=IN IP4 10.30.0.248.
t=0 0.
m=audio 17340 RTP/AVP 18.
a=rtpmap:18 G729/8000.
a=fmtp:18 annexb=yes.

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