[asterisk-bugs] [Asterisk 0012877]: Asterisk Fails SIP Performance Test with Navtel Interwatch 9500 Hardware Call Generator

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The following issue requires your FEEDBACK. 
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http://bugs.digium.com/view.php?id=12877 
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Reported By:                licedey
Assigned To:                
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Project:                    Asterisk
Issue ID:                   12877
Category:                   Channels/chan_sip/General
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.4.21-rc1 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             06-17-2008 13:39 CDT
Last Modified:              06-18-2008 19:17 CDT
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Summary:                    Asterisk Fails SIP Performance Test with  Navtel
Interwatch 9500 Hardware Call Generator
Description: 
- We are facing a lot of issues when we try to test Asterisk on HW call
generator Navtel Interwatch. Navtel Interwatch is an enterprise grade call
generator, Telco usually use it test softswitch and ip pbx equipment.

1) During the dialing, Asterisk sends Notify message on Ring, Interwatch
cannot understand by throwing error.

2) Call test fails with 5060 port, other ports works fine. We have tried
different IP PBX, only Asterisk fails the test with 5060 port. The problem
is that Asterisk send local ip address of caller instead of ip pbx domain.
Need to patch chan_sip.c to fix it.

3) Local Extensions Test: 3CPS, 100 peers, 27 concurrent calls 72 hours
   Result: 45% Skipped calls 60% Successful calls

4) SIP Trunk: Two Asterisk Boxes with each 100 peers and 1 SIP Trunks
  Interwatch --> Asterisk PBX ----> SW ---> Asterisk Box---> Interwatch

Error messages: 

18 00:34:58] WARNING[28035] chan_sip.c: Maximum retries exceeded on
transmission AA4OQn__CEYAABez08hfSQ--c36495 at xener.com for seqno 34384980
(Critical Response)
[Jun 18 00:36:15] WARNING[28035] chan_sip.c: Hanging up call
AA1rC3__CJMAABez08hfSQ--c36621 at xener.com - no reply to our critical
packet.
RTCP SR transmission error  rtcp halted Operation not permitted

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Relationships       ID      Summary
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has duplicate       0012879 Asterisk Fails SIP Performance Test wit...
has duplicate       0012878 Asterisk Fails SIP Performance Test wit...
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---------------------------------------------------------------------- 
 Corydon76 - 06-18-08 19:17  
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This is all well and good, but do you have a SPECIFIC issue where you can
show that our response is incorrect?  At this point, we have no way of
telling whether Asterisk sends the wrong response or if your test platform
is simply out of spec.

The output of 'sip set debug on' and quoting from SPECIFIC sections of the
RFC would help. 

Issue History 
Date Modified   Username       Field                    Change               
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06-18-08 19:17  Corydon76      Note Added: 0088894                          
06-18-08 19:17  Corydon76      Status                   new => feedback     
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