[asterisk-bugs] [Asterisk 0009511]: Q931 inband information not interpreted as alerting signal

[noreply at bugs.digium.com]

The following issue has been CLOSED 
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http://bugs.digium.com/view.php?id=9511 
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Reported By:                wzedi
Assigned To:                PCadach
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Project:                    Asterisk
Issue ID:                   9511
Category:                   Core/General
Reproducibility:            always
Severity:                   tweak
Priority:                   normal
Status:                     closed
Asterisk Version:           1.4.11 
SVN Branch (only for SVN checkouts, not tarball releases): N/A  
SVN Revision (number only!):  
Disclaimer on File?:        No 
Request Review:              
Resolution:                 open
Fixed in Version:           
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Date Submitted:             04-09-2007 17:36 CDT
Last Modified:              09-25-2007 03:44 CDT
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Summary:                    Q931 inband information not interpreted as alerting
signal
Description: 
We received reports from a customer that they were not hearing a ring tone
when making calls to certain extensions in their office even though the
extension was ringing.

Further investigation showed that this occurred when calls were made to
non-isdn extensions through one particular exchange. In this scenario
inband information is received from the network in the PROGRESS signal
which should be interpreted as an ALERTING signal.

The libpri implementation of Q931 does not accommodate this scenario.
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---------------------------------------------------------------------- 
 PCadach - 09-25-07 03:44  
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As I can see there are problems on remote (not Asterisk) side. You should
resolve this issue with your telephony (PRI) provider, or ask them for
national ISDN PRI specification describing exact behavior on PI=2/8 for
your country. At least for EuroISDN/ANSI/ITU variants of PRI handling of
PI=8 is correct, and should never be treated as ALERTING.

Do not hesitate to re-open the bug if you will have additional information
from your provider.


Thanks,
Paul. 

Issue History 
Date Modified   Username       Field                    Change               
====================================================================== 
09-25-07 03:44  PCadach        Status                   assigned => closed  
09-25-07 03:44  PCadach        Note Added: 0071055                          
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