Hi Bogdan, 

Thanks Bogdan. My UAC supports only AMR codec and as I understand that RTP 
Proxy does not support it. Can this be the issue? 

Thanks, 
Arjun 


----- Original Message ----- 
From: "Bogdan-Andrei Iancu" <[email protected]> 
To: "Arjun Shankar K S" <[email protected]> 
Cc: "OpenSIPS users mailling list" <[email protected]> 
Sent: Monday, July 16, 2012 2:07:23 PM GMT +05:30 Chennai, Kolkata, Mumbai, New 
Delhi 
Subject: Re: [OpenSIPS-Users] 500 Server Internal Error 

Hi ARjun, 

Well, the 500 reply is generated by one of your UACs (why? check with the UAC) 
- what is really brain dead is that the reply is for an ACK requests (see the 
cseq hdr in reply) - and according to SIP RFC3261, ACK requests do not have 
replies at all! 

Regards, 
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer http://www.opensips-solutions.com 
On 07/16/2012 09:41 AM, Arjun Shankar K S wrote: 

Hi Bogdan, 

The opensips server is running in a 220.225.134.9 public IP. All UACs are in 
the 220.225.134.x series. The SIP Trace is as given below, 


|Time | 220.225.134.9 | 
| | | 10.100.4.64 | 
|11.678 | INVITE SDP (AMRRTPType-114) |SIP From: < sip:1016@ 220.225.134.9 To:< 
sip:1012@ 220.225.134.9 
| |(5060) ------------------> (5060) | 
|12.182 | INVITE SDP (AMRRTPType-114) |SIP From: < sip:1016@ 220.225.134.9 To:< 
sip:1012@ 220.225.134.9 
| |(5060) ------------------> (5060) | 
|12.899 | 100 Trying| |SIP Status 
| |(5060) <------------------ (5060) | 
|13.209 | 180 Ringing |SIP Status 
| |(5060) <------------------ (5060) | 
|21.007 | 200 OK SDP (AMRRTPType-114) |SIP Status 
| |(5060) <------------------ (5060) | 
|21.126 | ACK | |SIP Request 
| |(5060) ------------------> (5060) | 
|21.579 | 200 OK SDP (AMRRTPType-114) |SIP Status 
| |(5060) <------------------ (5060) | 
|22.186 | 500 Server Internal Error |SIP Status 
| |(5060) <------------------ (5060) | 


And the ngrep capture was as I had put in my previous mail. 

Thanks, 
Arjun 

----- Original Message ----- 
From: "Bogdan-Andrei Iancu" <[email protected]> 
To: "Arjun Shankar K S" <[email protected]> 
Cc: "OpenSIPS users mailling list" <[email protected]> 
Sent: Friday, July 13, 2012 6:40:34 PM GMT +05:30 Chennai, Kolkata, Mumbai, New 
Delhi 
Subject: Re: [OpenSIPS-Users] 500 Server Internal Error 

Arjun, 

That is really foobar.....What device is 220.225.134.2:13120 and why is it 
generating a reply for an ACK request !?!?! ACK HAVE NOT replies at all :) 

Regards, 
Bogdan-Andrei Iancu 
OpenSIPS Founder and Developer http://www.opensips-solutions.com 
On 07/13/2012 01:52 PM, Arjun Shankar K S wrote: 

Hi Bogdan, 

Please find below the ngrep capture at the SIP server side, 

##################################################################################################################################################################################################################################################################################
 
U(17) 220.225.134.2:13120 -> 220.225.134.9:5060 
SIP/2.0 200 OK..Record-Route: <sip:220.225.134.9;lr=on> ..Call-Id: 
[email protected]: 1 INVITE..To: 
<sip:[email protected]> ;tag 
=4IHoLZ2ha..Via: SIP/2.0/UDP 
220.225.134.9:5060;branch=z9hG4bKec6a.856da06.0,SIP/2.0/UDP 
220.225.134.9:5060;received=203.199.234.3;rport=41792;branch=z9hG4bKd8feb 
fe85d601ca1b48d8bd8e6a10ba6..From: <sip:[email protected]> 
;tag=LXMkFpqUA..Contact: <sip:220.225.134.9:5060> ..Content-Type: 
application/sdp..Content-Length: 197.. 
..v=0..o=blackberry 1342175741968 1342175741968 IN IP4 220.225.134.2..s=Phone 
call..c=IN IP4 220.225.134.2..t=0 0..t=0 0..m=audio 7078 RTP/AVP 
114..a=rtpmap:114 A 
MR/8000/1..a=fmtp:114 octet-align=1.. 
# 
U(17) 220.225.134.9:5060 -> 203.199.234.3:41792 
SIP/2.0 200 OK..Record-Route: <sip:220.225.134.9;lr=on> ..Call-Id: 
[email protected]: 1 INVITE..To: 
<sip:[email protected]> ;tag 
=4IHoLZ2ha..Via: SIP/2.0/UDP 
220.225.134.9:5060;received=203.199.234.3;rport=41792;branch=z9hG4bKd8febfe85d601ca1b48d8bd8e6a10ba6..From:
 <sip:[email protected]> ; 
tag=LXMkFpqUA..Contact: <sip:220.225.134.2:13120;nat=yes> ..Content-Type: 
application/sdp..Content-Length: 216..P-hint: onreply_route|force_rtp_proxy 
..P-hint: Onr 
eply-route - fixcontact ....v=0..o=blackberry 1342175741968 1342175741968 IN 
IP4 220.225.134.2..s=Phone call..c=IN IP4 220.225.134.9..t=0 0..t=0 0..m=audio 
38476 
RTP/AVP 114..a=rtpmap:114 AMR/8000/1..a=fmtp:114 
octet-align=1..a=nortpproxy:yes.. 
############################# 
U(17) 203.199.234.3:41792 -> 220.225.134.9:5060 
ACK sip:220.225.134.2:13120;nat=yes SIP/2.0..Call-Id: 
[email protected]: 1 ACK..To: 
<sip:[email protected]> ;tag=4IHoLZ2ha..Via 
: SIP/2.0/UDP 
220.225.134.9:5060;rport;branch=z9hG4bK202da30a90a53ad5d81d9256e09b6db6..Max-Forwards:
 70..From: <sip:[email protected]> ;tag=LXMkFpqUA..Contact: <s 
ip:[email protected]:41792 >..Route: <sip:220.225.134.9;lr=on> 
..Content-Length: 0.... 
# 
U(17) 220.225.134.9:5060 -> 220.225.134.2:13120 
ACK sip:220.225.134.2:13120 SIP/2.0..Call-Id: 
[email protected]: 1 ACK..To: 
<sip:[email protected]> ;tag=4IHoLZ2ha..Via: SIP/2. 
0/UDP 220.225.134.9;branch=z9hG4bKec6a.856da06.2..Via: SIP/2.0/UDP 
220.225.134.9:5060;received=203.199.234.3;rport=41792;branch=z9hG4bK202da30a90a53ad5d81d9256e09
 
b6db6..Max-Forwards: 69..From: <sip:[email protected]> 
;tag=LXMkFpqUA..Contact: <sip:[email protected]:41792;nat=yes> 
..Content-Length: 0.... 
################ 
U(17) 220.225.134.2:13120 -> 220.225.134.9:5060 
SIP/2.0 200 OK..Record-Route: <sip:220.225.134.9;lr=on> ..Call-Id: 
[email protected]: 1 INVITE..To: 
<sip:[email protected]> ;tag 
=4IHoLZ2ha..Via: SIP/2.0/UDP 
220.225.134.9:5060;branch=z9hG4bKec6a.856da06.0,SIP/2.0/UDP 
220.225.134.9:5060;received=203.199.234.3;rport=41792;branch=z9hG4bKd8feb 
fe85d601ca1b48d8bd8e6a10ba6..From: <sip:[email protected]> 
;tag=LXMkFpqUA..Contact: <sip:220.225.134.9:5060> ..Content-Type: 
application/sdp..Content-Length: 197.. 
..v=0..o=blackberry 1342175741968 1342175741968 IN IP4 220.225.134.2..s=Phone 
call..c=IN IP4 220.225.134.2..t=0 0..t=0 0..m=audio 7078 RTP/AVP 
114..a=rtpmap:114 A 
MR/8000/1..a=fmtp:114 octet-align=1.. 
# 
U(17) 220.225.134.9:5060 -> 203.199.234.3:41792 
SIP/2.0 200 OK..Record-Route: <sip:220.225.134.9;lr=on> ..Call-Id: 
[email protected]: 1 INVITE..To: 
<sip:[email protected]> ;tag 
=4IHoLZ2ha..Via: SIP/2.0/UDP 
220.225.134.9:5060;received=203.199.234.3;rport=41792;branch=z9hG4bKd8febfe85d601ca1b48d8bd8e6a10ba6..From:
 <sip:[email protected]> ; 
tag=LXMkFpqUA..Contact: <sip:220.225.134.2:13120;nat=yes> ..Content-Type: 
application/sdp..Content-Length: 216..P-hint: onreply_route|force_rtp_proxy 
..P-hint: Onr 
eply-route - fixcontact ....v=0..o=blackberry 1342175741968 1342175741968 IN 
IP4 220.225.134.2..s=Phone call..c=IN IP4 220.225.134.9..t=0 0..t=0 0..m=audio 
38476 
RTP/AVP 114..a=rtpmap:114 AMR/8000/1..a=fmtp:114 
octet-align=1..a=nortpproxy:yes.. 
################# 
U(17) 220.225.134.2:13120 -> 220.225.134.9:5060 
SIP/2.0 500 Server Internal Error..Call-Id: 
[email protected]: 1 ACK..To: 
<sip:[email protected]> ;tag=4IHoLZ2ha..Via: SIP/2.0/ 
UDP 220.225.134.9:5060;branch=z9hG4bKec6a.856da06.2,SIP/2.0/UDP 
220.225.134.9:5060;received=203.199.234.3;rport=41792;branch=z9hG4bK202da30a90a53ad5d81d9256e09b6d
 
b6..From: <sip:[email protected]> ;tag=LXMkFpqUA..Contact: 
<sip:220.225.134.9:5060> ..Content-Length: 0.... 
#######################################################################################################
 
U(17) 220.225.134.9:5060 -> 220.225.134.2:13120 
OPTIONS sip:220.225.134.2:13120 SIP/2.0..Via: SIP/2.0/UDP 
220.225.134.9:5060;branch=0..From: sip:pinger@PROXY_IP;tag=63cac2b..To: 
sip:220.225.134.2:13120..Call-ID 
: [email protected]: 1 OPTIONS..Content-Length: 0.... 
#####################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################
 
U(17) 220.225.134.9:5060 -> 203.199.234.3:24922 
OPTIONS sip:203.199.234.3:24922 SIP/2.0..Via: SIP/2.0/UDP 
220.225.134.9:5060;branch=0..From: sip:pinger@PROXY_IP;tag=73cac2b..To: 
sip:203.199.234.3:24922..Call-ID 
: [email protected]: 1 OPTIONS..Content-Length: 0.... 
################################## 
U(17) 203.199.234.3:24922 -> 220.225.134.9:5060 
SIP/2.0 200 OK..Via: SIP/2.0/UDP 220.225.134.9:5060;branch=0..Contact: 
<sip:10.100.4.156:20958> ..To: <sip:203.199.234.3:24922> ;tag=190a3f50..From: < 
sip:pinger@PRO 
XY_IP>;tag=73cac2b..Call-ID: [email protected]: 1 
OPTIONS..Accept: application/sdp..Accept-Language: en..Allow: INVITE, ACK, 
CANCEL, OPT 
IONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO..User-Agent: X-Lite release 
1103k stamp 53621..Content-Length: 0.... 
#############################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################
 
U(17) 220.225.134.9:5060 -> 59.144.118.72:21788 
OPTIONS sip:59.144.118.72:21788 SIP/2.0..Via: SIP/2.0/UDP 
220.225.134.9:5060;branch=0..From: sip:pinger@PROXY_IP;tag=83cac2b..To: 
sip:59.144.118.72:21788..Call-ID 
: [email protected]: 1 OPTIONS..Content-Length: 0.... 
#################################### 
U(17) 59.144.118.72:21788 -> 220.225.134.9:5060 
SIP/2.0 200 OK..Via: SIP/2.0/UDP 220.225.134.9:5060;branch=0..Contact: 
<sip:192.168.1.112:21788> ..To: <sip:59.144.118.72:21788> ;tag=bc7b1d12..From: 
< sip:pinger@PR 
OXY_IP>;tag=83cac2b..Call-ID: [email protected]: 1 
OPTIONS..Accept: application/sdp..Accept-Language: en..Allow: INVITE, ACK, 
CANCEL, OP 
TIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO..Supported: 
replaces..User-Agent: X-Lite 4 release 4.1 stamp 63215..Content-Length: 0.... 
#########################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################
 
U(17) 220.225.134.9:5060 -> 59.144.118.72:57246 
OPTIONS sip:59.144.118.72:57246 SIP/2.0..Via: SIP/2.0/UDP 
220.225.134.9:5060;branch=0..From: sip:pinger@PROXY_IP;tag=93cac2b..To: 
sip:59.144.118.72:57246..Call-ID 
: [email protected]: 1 OPTIONS..Content-Length: 0.... 
############################### 
U(17) 59.144.118.72:57246 -> 220.225.134.9:5060 
SIP/2.0 200 OK..Via: SIP/2.0/UDP 220.225.134.9:5060;branch=0..From: 
<sip:pinger@PROXY> ;tag=61cac2b..To: <sip:59.144.118.72:57246> 
;tag=1255356873..Contact: < sip:pi 
[email protected]:57246;transport=udp >..Call-ID: 
[email protected]: 1 OPTIONS..Content-Length: 0.... 
############################################################################################################################################
 

Please let me know where the error is. 

Thanks, 
Arjun 
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