[asterisk-bugs] [Asterisk 0013209]: DTMF RFC2833 via SIP is not working

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=13209 
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Reported By:                ip-rob
Assigned To:                
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Project:                    Asterisk
Issue ID:                   13209
Category:                   Channels/chan_sip/General
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     acknowledged
Asterisk Version:           1.4.21.2 
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:             2008-07-31 08:23 CDT
Last Modified:              2008-11-14 17:17 CST
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Summary:                    DTMF RFC2833 via SIP is not working
Description: 
Using provider bandwidth.com which support RFC2833.  Configure outbound
trunk to use dtmfmode=rfc2833 and we receive double digits on a different
asterisk servers IVR.  American Express IVR does not accept any digits
(used main customer service line to test entering credit card number). 
Other IVR functions do not work.

Changing to inband works but inband should not be required by
bandwidth.com, they support rfc2833.

Configuration is using SIP devices and SIP trunks only.  A search in issue
tracker found similar problems in January of 2008 but no currently open
issues.
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 (0094926) sheets (reporter) - 2008-11-14 17:17
 http://bugs.digium.com/view.php?id=13209#c94926 
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Same story here too, I can grab traces of this issue past 1.4.18 all day
where you press 1 digit and get 6... While DTMFMODE=INFO works most of the
time for Trunks I have seen problems where you call an IVR and they do a
`*1` transfer.
When Asterisk hears the `*1` asterisk disconnects the call. The other
issue with  DTMFMODE=INFO is when doing Follow ME when the call comes into
certain cell phones and you have it setup to "press 1 to accept" Asterisk
does not recognize the "1". I will be more than happy to provide some dev
machines, traces or anything else I can to help get this issue resolved...
HELP!!!
Is this due to changes in app_dial.c ? 

Issue History 
Date Modified    Username       Field                    Change               
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2008-11-14 17:17 sheets         Note Added: 0094926                          
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