[asterisk-bugs] [LibPRI 0016859]: answer() accepted without receiving CONNECT ACKNOWLEDGE from the ISDN network

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=16859 
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Reported By:                lsimoes
Assigned To:                mattf
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Project:                    LibPRI
Issue ID:                   16859
Category:                   General
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     assigned
Asterisk Version:           1.6.2.2 
JIRA:                        
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:             2010-02-18 00:34 CST
Last Modified:              2010-02-19 09:15 CST
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Summary:                    answer() accepted without receiving CONNECT
ACKNOWLEDGE from the ISDN network
Description: 
Hello,

Our system is composed by:
   linux - 2.6.26
   Asterisk - 1.6.2.0-rc2
   dahdi-linux - 2.2.0.2
   libpri - 1.4.10.2
   HW Digium TE420

We verified that some calls are considered correctly accepted and
registered in the CDR as ANSWERED, even when there is not a CONNECT
ACKNOWLEDGE received from the E1 line, as you can see from the signalling
traces. Included are 3 traces.

We have found several of these situations.

This appears to be related to periods of intense calls receiving.

Also it appears that there are no response to STATUS messages from the
network.

Thanks in advance for any help to solve this issue.

Regards,
Leonel

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 (0118277) lsimoes (reporter) - 2010-02-19 09:15
 https://issues.asterisk.org/view.php?id=16859#c118277 
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Taking into consideration the latency and performance issues regarding 5th
generation, maybe this information is necessary:

pci:0000:03:08.0     wct4xxp+     d161:0420 Wildcard TE420 (4th Gen)

03:08.0 Communication controller: Digium, Inc. Device 0420 (rev 02)
        Subsystem: Device 0004:0000
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 64
        Interrupt: pin A routed to IRQ 16
        Region 0: Memory at fe9ffc00 (32-bit, non-prefetchable)
[size=128]
        Kernel driver in use: wct4xxp
        Kernel modules: wct4xxp 

Issue History 
Date Modified    Username       Field                    Change               
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2010-02-19 09:15 lsimoes        Note Added: 0118277                          
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