[asterisk-bugs] [Asterisk 0013119]: Duplicated Digit 9 DTMF Relay/ Origination from O2 Germany

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=13119 
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Reported By:                mazhar996
Assigned To:                
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Project:                    Asterisk
Issue ID:                   13119
Category:                   Core/Channels
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.4.21 
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:             2008-07-20 20:30 CDT
Last Modified:              2008-10-20 05:47 CDT
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Summary:                    Duplicated Digit 9 DTMF Relay/ Origination from O2
Germany
Description: 
Hi there,
 I am facing problems with DTMF relay when Digit 9 is pressed. I am using
rfc2833 , all digits are relayed properly except the digit 9
9 is mostly doubled and sometimes three times. I have tested it many times
and noticed that whenever digit 9 is entered its relayed twice or thrice.
 actually at times its relayed properly too. but most of the times its
duplicated.

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 (0093961) gerd1000 (reporter) - 2008-10-20 05:47
 http://bugs.digium.com/view.php?id=13119#c93961 
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I could confirm that this behaviour is O2 (a german GSM network provider)
specific and  independent of GSM phone and it is only related to '9'. 
It gets even worse if the user is dialing a sequence of 9s.
If your asterisk is connected via SIP to 3U then
either you talk to 3U (or to the vendor of their equipement (TELES?)) for

doing some changes in their DTMF recognition or you
try to convince O2 to solve it. 

Issue History 
Date Modified    Username       Field                    Change               
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2008-10-20 05:47 gerd1000       Note Added: 0093961                          
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