You have to sniff on the loopback device, e.g.

tcpdump -i any .... for all interfaces
tcpdump -i lo ..... for loopback only

in tethereal is a similar option.

regards
klaus

Christopher Aloi wrote:
> Hello Oliver -
> 
> Thanks for your reply.
> 
> I attempted to get the network level capture; but was not successful.
> I believe I cannot get this trace because the traffic is all on the same host.
> Using tethereal I tried the following:
> tethereal -f "not tcp port ssh"
> And placed an actual SIP call - Doing that I see the SIP traffic
> Running the same trace and SiPp locally; I don't see the SIP traffic.
> 
> I do have the SIP debug coming out of Asterisk (see below).
> AFAIK this is the closest I can get to a true network level capture.
> 
> Maybe my problem is I am running SiPp on the same host as Asterisk?
> Maybe the messages aren't getting where they should because of that??
> 
> Humm.....
> 
> ------
> start asterisk sip trace
> ------
> asterdev1*CLI>
> <-- SIP read from 66.218.0.21:5061:
> INVITE sip:[EMAIL PROTECTED]:5060 SIP/2.0
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-1-0
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=1
> To: sut <sip:[EMAIL PROTECTED]:5060>
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> Contact: sip:[EMAIL PROTECTED]:5061
> Max-Forwards: 70
> Subject: Performance Test
> Content-Type: application/sdp
> Content-Length:  133
> 
> v=0
> o=user1 53655765 2353687637 IN IP4 66.218.0.21
> s=-
> c=IN IP4 66.218.0.21
> t=0 0
> m=audio 6000 RTP/AVP 0
> a=rtpmap:0 PCMU/8000
> 
> --- (11 headers 7 lines)---
> Using INVITE request as basis request - [EMAIL PROTECTED]
> Sending to 66.218.0.21 : 5061 (non-NAT)
> Found no matching peer or user for '66.218.0.21:5061'
> Found RTP audio format 0
> Peer audio RTP is at port 66.218.0.21:6000
> Found description format PCMU
> Capabilities: us - 0xe (gsm|ulaw|alaw), peer - audio=0x4
> (ulaw)/video=0x0 (nothing), combined - 0x4 (ulaw)
> Non-codec capabilities: us - 0x1 (telephone-event), peer - 0x0
> (nothing), combined - 0x0 (nothing)
> Looking for 35 in default (domain 66.218.0.21)
> Reliably Transmitting (no NAT) to 66.218.0.21:5061:
> SIP/2.0 404 Not Found
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-1-0;received=66.218.0.21
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=1
> To: sut <sip:[EMAIL PROTECTED]:5060>;tag=as1dea607c
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> User-Agent: AsterDev
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
> Contact: <sip:[EMAIL PROTECTED]>
> Content-Length: 0
> 
> 
> ---
> asterdev1*CLI>
> <-- SIP read from 66.218.0.21:5061:
> INVITE sip:[EMAIL PROTECTED]:5060 SIP/2.0
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-2-0
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=2
> To: sut <sip:[EMAIL PROTECTED]:5060>
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> Contact: sip:[EMAIL PROTECTED]:5061
> Max-Forwards: 70
> Subject: Performance Test
> Content-Type: application/sdp
> Content-Length:  133
> 
> v=0
> o=user1 53655765 2353687637 IN IP4 66.218.0.21
> s=-
> c=IN IP4 66.218.0.21
> t=0 0
> m=audio 6000 RTP/AVP 0
> a=rtpmap:0 PCMU/8000
> 
> --- (11 headers 7 lines)---
> Using INVITE request as basis request - [EMAIL PROTECTED]
> Sending to 66.218.0.21 : 5061 (non-NAT)
> Found no matching peer or user for '66.218.0.21:5061'
> Found RTP audio format 0
> Peer audio RTP is at port 66.218.0.21:6000
> Found description format PCMU
> Capabilities: us - 0xe (gsm|ulaw|alaw), peer - audio=0x4
> (ulaw)/video=0x0 (nothing), combined - 0x4 (ulaw)
> Non-codec capabilities: us - 0x1 (telephone-event), peer - 0x0
> (nothing), combined - 0x0 (nothing)
> Looking for 35 in default (domain 66.218.0.21)
> Reliably Transmitting (no NAT) to 66.218.0.21:5061:
> SIP/2.0 404 Not Found
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-2-0;received=66.218.0.21
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=2
> To: sut <sip:[EMAIL PROTECTED]:5060>;tag=as306fb6b7
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> User-Agent: AsterDev
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
> Contact: <sip:[EMAIL PROTECTED]>
> Content-Length: 0
> 
> 
> ---
> asterdev1*CLI>
> <-- SIP read from 66.218.0.21:5061:
> INVITE sip:[EMAIL PROTECTED]:5060 SIP/2.0
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-1-0
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=1
> To: sut <sip:[EMAIL PROTECTED]:5060>
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> Contact: sip:[EMAIL PROTECTED]:5061
> Max-Forwards: 70
> Subject: Performance Test
> Content-Type: application/sdp
> Content-Length:  133
> 
> v=0
> o=user1 53655765 2353687637 IN IP4 66.218.0.21
> s=-
> c=IN IP4 66.218.0.21
> t=0 0
> m=audio 6000 RTP/AVP 0
> a=rtpmap:0 PCMU/8000
> 
> --- (11 headers 7 lines)---
> Ignoring this INVITE request
> asterdev1*CLI>
> <-- SIP read from 66.218.0.21:5061:
> INVITE sip:[EMAIL PROTECTED]:5060 SIP/2.0
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-2-0
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=2
> To: sut <sip:[EMAIL PROTECTED]:5060>
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> Contact: sip:[EMAIL PROTECTED]:5061
> Max-Forwards: 70
> Subject: Performance Test
> Content-Type: application/sdp
> Content-Length:  133
> 
> v=0
> o=user1 53655765 2353687637 IN IP4 66.218.0.21
> s=-
> c=IN IP4 66.218.0.21
> t=0 0
> m=audio 6000 RTP/AVP 0
> a=rtpmap:0 PCMU/8000
> 
> --- (11 headers 7 lines)---
> Ignoring this INVITE request
> Retransmitting #1 (no NAT) to 66.218.0.21:5061:
> SIP/2.0 404 Not Found
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-1-0;received=66.218.0.21
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=1
> To: sut <sip:[EMAIL PROTECTED]:5060>;tag=as1dea607c
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> User-Agent: AsterDev
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
> Contact: <sip:[EMAIL PROTECTED]>
> Content-Length: 0
> 
> 
> ---
> Retransmitting #1 (no NAT) to 66.218.0.21:5061:
> SIP/2.0 404 Not Found
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-2-0;received=66.218.0.21
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=2
> To: sut <sip:[EMAIL PROTECTED]:5060>;tag=as306fb6b7
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> User-Agent: AsterDev
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
> Contact: <sip:[EMAIL PROTECTED]>
> Content-Length: 0
> 
> 
> ---
> asterdev1*CLI>
> <-- SIP read from 66.218.0.21:5061:
> INVITE sip:[EMAIL PROTECTED]:5060 SIP/2.0
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-1-0
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=1
> To: sut <sip:[EMAIL PROTECTED]:5060>
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> Contact: sip:[EMAIL PROTECTED]:5061
> Max-Forwards: 70
> Subject: Performance Test
> Content-Type: application/sdp
> Content-Length:  133
> 
> v=0
> o=user1 53655765 2353687637 IN IP4 66.218.0.21
> s=-
> c=IN IP4 66.218.0.21
> t=0 0
> m=audio 6000 RTP/AVP 0
> a=rtpmap:0 PCMU/8000
> 
> --- (11 headers 7 lines)---
> Ignoring this INVITE request
> asterdev1*CLI>
> <-- SIP read from 66.218.0.21:5061:
> INVITE sip:[EMAIL PROTECTED]:5060 SIP/2.0
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-2-0
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=2
> To: sut <sip:[EMAIL PROTECTED]:5060>
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> Contact: sip:[EMAIL PROTECTED]:5061
> Max-Forwards: 70
> Subject: Performance Test
> Content-Type: application/sdp
> Content-Length:  133
> 
> v=0
> o=user1 53655765 2353687637 IN IP4 66.218.0.21
> s=-
> c=IN IP4 66.218.0.21
> t=0 0
> m=audio 6000 RTP/AVP 0
> a=rtpmap:0 PCMU/8000
> 
> --- (11 headers 7 lines)---
> Ignoring this INVITE request
> Retransmitting #2 (no NAT) to 66.218.0.21:5061:
> SIP/2.0 404 Not Found
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-1-0;received=66.218.0.21
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=1
> To: sut <sip:[EMAIL PROTECTED]:5060>;tag=as1dea607c
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> User-Agent: AsterDev
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
> Contact: <sip:[EMAIL PROTECTED]>
> Content-Length: 0
> 
> 
> ---
> Retransmitting #2 (no NAT) to 66.218.0.21:5061:
> SIP/2.0 404 Not Found
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-2-0;received=66.218.0.21
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=2
> To: sut <sip:[EMAIL PROTECTED]:5060>;tag=as306fb6b7
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> User-Agent: AsterDev
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
> Contact: <sip:[EMAIL PROTECTED]>
> Content-Length: 0
> 
> 
> ---
> asterdev1*CLI>
> <-- SIP read from 66.218.0.21:5061:
> INVITE sip:[EMAIL PROTECTED]:5060 SIP/2.0
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-1-0
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=1
> To: sut <sip:[EMAIL PROTECTED]:5060>
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> Contact: sip:[EMAIL PROTECTED]:5061
> Max-Forwards: 70
> Subject: Performance Test
> Content-Type: application/sdp
> Content-Length:  133
> 
> v=0
> o=user1 53655765 2353687637 IN IP4 66.218.0.21
> s=-
> c=IN IP4 66.218.0.21
> t=0 0
> m=audio 6000 RTP/AVP 0
> a=rtpmap:0 PCMU/8000
> 
> --- (11 headers 7 lines)---
> Ignoring this INVITE request
> Retransmitting #3 (no NAT) to 66.218.0.21:5061:
> SIP/2.0 404 Not Found
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-1-0;received=66.218.0.21
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=1
> To: sut <sip:[EMAIL PROTECTED]:5060>;tag=as1dea607c
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> User-Agent: AsterDev
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
> Contact: <sip:[EMAIL PROTECTED]>
> Content-Length: 0
> 
> 
> ---
> asterdev1*CLI>
> <-- SIP read from 66.218.0.21:5061:
> INVITE sip:[EMAIL PROTECTED]:5060 SIP/2.0
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-2-0
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=2
> To: sut <sip:[EMAIL PROTECTED]:5060>
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> Contact: sip:[EMAIL PROTECTED]:5061
> Max-Forwards: 70
> Subject: Performance Test
> Content-Type: application/sdp
> Content-Length:  133
> 
> v=0
> o=user1 53655765 2353687637 IN IP4 66.218.0.21
> s=-
> c=IN IP4 66.218.0.21
> t=0 0
> m=audio 6000 RTP/AVP 0
> a=rtpmap:0 PCMU/8000
> 
> --- (11 headers 7 lines)---
> Ignoring this INVITE request
> Retransmitting #3 (no NAT) to 66.218.0.21:5061:
> SIP/2.0 404 Not Found
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-2-0;received=66.218.0.21
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=2
> To: sut <sip:[EMAIL PROTECTED]:5060>;tag=as306fb6b7
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> User-Agent: AsterDev
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
> Contact: <sip:[EMAIL PROTECTED]>
> Content-Length: 0
> 
> 
> ---
> Retransmitting #4 (no NAT) to 66.218.0.21:5061:
> SIP/2.0 404 Not Found
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-1-0;received=66.218.0.21
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=1
> To: sut <sip:[EMAIL PROTECTED]:5060>;tag=as1dea607c
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> User-Agent: AsterDev
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
> Contact: <sip:[EMAIL PROTECTED]>
> Content-Length: 0
> 
> 
> ---
> asterdev1*CLI>
> <-- SIP read from 66.218.0.21:5061:
> INVITE sip:[EMAIL PROTECTED]:5060 SIP/2.0
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-1-0
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=1
> To: sut <sip:[EMAIL PROTECTED]:5060>
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> Contact: sip:[EMAIL PROTECTED]:5061
> Max-Forwards: 70
> Subject: Performance Test
> Content-Type: application/sdp
> Content-Length:  133
> 
> v=0
> o=user1 53655765 2353687637 IN IP4 66.218.0.21
> s=-
> c=IN IP4 66.218.0.21
> t=0 0
> m=audio 6000 RTP/AVP 0
> a=rtpmap:0 PCMU/8000
> 
> --- (11 headers 7 lines)---
> Ignoring this INVITE request
> Retransmitting #4 (no NAT) to 66.218.0.21:5061:
> SIP/2.0 404 Not Found
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-2-0;received=66.218.0.21
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=2
> To: sut <sip:[EMAIL PROTECTED]:5060>;tag=as306fb6b7
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> User-Agent: AsterDev
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
> Contact: <sip:[EMAIL PROTECTED]>
> Content-Length: 0
> 
> 
> ---
> asterdev1*CLI>
> <-- SIP read from 66.218.0.21:5061:
> INVITE sip:[EMAIL PROTECTED]:5060 SIP/2.0
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-2-0
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=2
> To: sut <sip:[EMAIL PROTECTED]:5060>
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> Contact: sip:[EMAIL PROTECTED]:5061
> Max-Forwards: 70
> Subject: Performance Test
> Content-Type: application/sdp
> Content-Length:  133
> 
> v=0
> o=user1 53655765 2353687637 IN IP4 66.218.0.21
> s=-
> c=IN IP4 66.218.0.21
> t=0 0
> m=audio 6000 RTP/AVP 0
> a=rtpmap:0 PCMU/8000
> 
> --- (11 headers 7 lines)---
> Ignoring this INVITE request
> Retransmitting #5 (no NAT) to 66.218.0.21:5061:
> SIP/2.0 404 Not Found
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-1-0;received=66.218.0.21
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=1
> To: sut <sip:[EMAIL PROTECTED]:5060>;tag=as1dea607c
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> User-Agent: AsterDev
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
> Contact: <sip:[EMAIL PROTECTED]>
> Content-Length: 0
> 
> 
> ---
> Retransmitting #5 (no NAT) to 66.218.0.21:5061:
> SIP/2.0 404 Not Found
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-2-0;received=66.218.0.21
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=2
> To: sut <sip:[EMAIL PROTECTED]:5060>;tag=as306fb6b7
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> User-Agent: AsterDev
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
> Contact: <sip:[EMAIL PROTECTED]>
> Content-Length: 0
> 
> 
> ---
> Retransmitting #6 (no NAT) to 66.218.0.21:5061:
> SIP/2.0 404 Not Found
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-1-0;received=66.218.0.21
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=1
> To: sut <sip:[EMAIL PROTECTED]:5060>;tag=as1dea607c
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> User-Agent: AsterDev
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
> Contact: <sip:[EMAIL PROTECTED]>
> Content-Length: 0
> 
> 
> ---
> Retransmitting #6 (no NAT) to 66.218.0.21:5061:
> SIP/2.0 404 Not Found
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-2-0;received=66.218.0.21
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=2
> To: sut <sip:[EMAIL PROTECTED]:5060>;tag=as306fb6b7
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> User-Agent: AsterDev
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
> Contact: <sip:[EMAIL PROTECTED]>
> Content-Length: 0
> 
> 
> ---
> asterdev1*CLI>
> <-- SIP read from 66.218.0.21:5061:
> INVITE sip:[EMAIL PROTECTED]:5060 SIP/2.0
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-1-0
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=1
> To: sut <sip:[EMAIL PROTECTED]:5060>
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> Contact: sip:[EMAIL PROTECTED]:5061
> Max-Forwards: 70
> Subject: Performance Test
> Content-Type: application/sdp
> Content-Length:  133
> 
> v=0
> o=user1 53655765 2353687637 IN IP4 66.218.0.21
> s=-
> c=IN IP4 66.218.0.21
> t=0 0
> m=audio 6000 RTP/AVP 0
> a=rtpmap:0 PCMU/8000
> 
> --- (11 headers 7 lines)---
> Ignoring this INVITE request
> asterdev1*CLI>
> <-- SIP read from 66.218.0.21:5061:
> INVITE sip:[EMAIL PROTECTED]:5060 SIP/2.0
> Via: SIP/2.0/UDP 66.218.0.21:5061;branch=z9hG4bK-2-0
> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=2
> To: sut <sip:[EMAIL PROTECTED]:5060>
> Call-ID: [EMAIL PROTECTED]
> CSeq: 1 INVITE
> Contact: sip:[EMAIL PROTECTED]:5061
> Max-Forwards: 70
> Subject: Performance Test
> Content-Type: application/sdp
> Content-Length:  133
> 
> v=0
> o=user1 53655765 2353687637 IN IP4 66.218.0.21
> s=-
> c=IN IP4 66.218.0.21
> t=0 0
> m=audio 6000 RTP/AVP 0
> a=rtpmap:0 PCMU/8000
> 
> --- (11 headers 7 lines)---
> Ignoring this INVITE request
> Sep  4 12:02:25 WARNING[9741]: chan_sip.c:1226 retrans_pkt: Maximum
> retries exceeded on transmission [EMAIL PROTECTED] for seqno 1
> (Critical Response)
> Destroying call '[EMAIL PROTECTED]'
> Sep  4 12:02:25 WARNING[9741]: chan_sip.c:1226 retrans_pkt: Maximum
> retries exceeded on transmission [EMAIL PROTECTED] for seqno 1
> (Critical Response)
> Destroying call '[EMAIL PROTECTED]'
> 
> 
> 
> 
> 
> 
> On 9/4/06, Olivier Jacques <[EMAIL PROTECTED]> wrote:
>> Christopher Aloi wrote:
>>> Hello List -
>>>
>>> I'm new to using SiPp but have a good understanding of SIP etc...
>>>
>>> I'm hoping someone can point me in the right direction here.
>>>
>>> Here's the call flow:
>>>
>>> SiPp => Asterisk (pretty simple, I know)
>>>
>>> It seems i'm not sending an ACK from SiPp to Asterisk for a 404 or
>>> even a 200 okay.  From what I can tell Asterisk tries to re-send the
>>> message about five times, then kills the call.  I see the same on the
>>> SiPp side.
>>>
>>> I modified the uac.xml file to include a list of numbers I call from
>>> an external text file (that works perfect).
>>> But I see this behavior when I use the embedded uac xml as well.
>>>
>>> Here's a break down....
>>>
>>> I added a recv response 404 to the uac.xml file after the standard 183:
>>>
>>>   <recv response="404" optional=true>
>>>   </recv>
>>>
>>> Here is how I called SiPp:
>>>
>>> sipp -sn uac -d 500 -s 35 66.218.0.21 <http://66.218.0.21> -m 2
>>> -trace_err -trace_msg
>>>
>>> One call to sip:[EMAIL PROTECTED] <mailto:sip:[EMAIL PROTECTED]>
>>>
>>> Here's the message.log from SiPp
>>>
>>> <start>
>>> ----------------------------------------------- 2006-08-31 13:24:20
>>> UDP message sent:
>>>
>>> INVITE sip:[EMAIL PROTECTED]:5060 SIP/2.0
>>> Via: SIP/2.0/UDP 66.218.0.21:5061
>>> <http://66.218.0.21:5061>;branch=z9hG4bK-1-0
>>> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=1
>>> To: sut < sip:[EMAIL PROTECTED]:5060>
>>> Call-ID: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
>>> CSeq: 1 INVITE
>>> Contact: sip:[EMAIL PROTECTED]:5061
>>> Max-Forwards: 70
>>> Subject: Performance Test
>>> Content-Type: application/sdp
>>> Content-Length:  133
>>>
>>> v=0
>>> o=user1 53655765 2353687637 IN IP4 66.218.0.21 <http://66.218.0.21>
>>> s=-
>>> c=IN IP4 66.218.0.21 <http://66.218.0.21>
>>> t=0 0
>>> m=audio 6000 RTP/AVP 0
>>> a=rtpmap:0 PCMU/8000
>>>
>>> ----------------------------------------------- 2006-08-31 13:24:20
>>> UDP message received [382] bytes :
>>>
>>> SIP/2.0 404 Not Found
>>> Via: SIP/2.0/UDP 66.218.0.21:5061
>>> <http://66.218.0.21:5061>;branch=z9hG4bK-1-0;received=66.218.0.21
>>> <http://66.218.0.21>
>>> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=1
>>> To: sut <sip:[EMAIL PROTECTED]:5060>;tag=as16725868
>>> Call-ID: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
>>> CSeq: 1 INVITE
>>> User-Agent: AsterDev
>>> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
>>> Contact: <sip:[EMAIL PROTECTED] <mailto:sip:[EMAIL PROTECTED]>>
>>> Content-Length: 0
>>>
>>>
>>> ----------------------------------------------- 2006-08-31 13:24:20
>>> UDP message sent:
>>>
>>> INVITE sip:[EMAIL PROTECTED]:5060 SIP/2.0
>>> Via: SIP/2.0/UDP 66.218.0.21:5061 <http://66.218.0.21:5061>
>>> ;branch=z9hG4bK-2-0
>>> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=2
>>> To: sut <sip:[EMAIL PROTECTED]:5060>
>>> Call-ID: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
>>> CSeq: 1 INVITE
>>> Contact: sip:[EMAIL PROTECTED] :5061
>>> Max-Forwards: 70
>>> Subject: Performance Test
>>> Content-Type: application/sdp
>>> Content-Length:  133
>>>
>>> v=0
>>> o=user1 53655765 2353687637 IN IP4 66.218.0.21 <http://66.218.0.21>
>>> s=-
>>> c=IN IP4 66.218.0.21 <http://66.218.0.21>
>>> t=0 0
>>> m=audio 6000 RTP/AVP 0
>>> a=rtpmap:0 PCMU/8000
>>>
>>>
>>>
>>> <.....this continues for awhile>
>>>
>>> And here's some debug from Asterisk:
>>>
>>> <-- SIP read from 66.218.0.21:5061 <http://66.218.0.21:5061>:
>>> INVITE sip:[EMAIL PROTECTED]:5060 SIP/2.0
>>> Via: SIP/2.0/UDP 66.218.0.21:5061
>>> <http://66.218.0.21:5061>;branch=z9hG4bK-2-0
>>> From: sipp <sip:[EMAIL PROTECTED] :5061>;tag=2
>>> To: sut <sip:[EMAIL PROTECTED]:5060>
>>> Call-ID: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
>>> CSeq: 1 INVITE
>>> Contact: sip:[EMAIL PROTECTED]:5061
>>> Max-Forwards: 70
>>> Subject: Performance Test
>>> Content-Type: application/sdp
>>> Content-Length:  133
>>>
>>> v=0
>>> o=user1 53655765 2353687637 IN IP4 66.218.0.21 <http://66.218.0.21>
>>> s=-
>>> c=IN IP4 66.218.0.21 <http://66.218.0.21>
>>> t=0 0
>>> m=audio 6000 RTP/AVP 0
>>> a=rtpmap:0 PCMU/8000
>>>
>>> --- (11 headers 7 lines)---
>>> Ignoring this INVITE request
>>> Retransmitting #1 (no NAT) to 66.218.0.21:5061 <http://66.218.0.21:5061>:
>>> SIP/2.0 404 Not Found
>>> Via: SIP/2.0/UDP 66.218.0.21:5061
>>> <http://66.218.0.21:5061>;branch=z9hG4bK-1-0;received=66.218.0.21
>>> <http://66.218.0.21>
>>> From: sipp <sip:[EMAIL PROTECTED]:5061>;tag=1
>>> To: sut <sip:[EMAIL PROTECTED] :5060>;tag=as16725868
>>> Call-ID: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
>>> CSeq: 1 INVITE
>>> User-Agent: AsterDev
>>> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
>>> Contact: < sip:[EMAIL PROTECTED] <mailto:sip:[EMAIL PROTECTED]>>
>>> Content-Length: 0
>>>
>>>
>> If you are using the embedded "uac scenario", then SIPp will try to send
>> an ACK to any unexpected 404 (4xx or 5xx actually). So what you are see
>> is unexpected :)
>> Can you make a network capture with Ethereal/Wireshark and send the result?
>>
>> Olivier.
>>
> 
> 
> 


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