[asterisk-bugs] [Asterisk 0018084]: DTMF tones fail DAHDI>DAHDI

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=18084 
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Reported By:                seandarcy
Assigned To:                
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Project:                    Asterisk
Issue ID:                   18084
Category:                   Channels/chan_dahdi
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Asterisk Version:           1.6.2.14-rc1 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2010-10-01 12:54 CDT
Last Modified:              2010-10-02 17:06 CDT
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Summary:                    DTMF tones fail DAHDI>DAHDI
Description: 
I have internal DAHDI lines and an external DAHDI PSTN for local calls and
use SIP for ld calls. If I call locally (DAHDI > DAHDI) the dtmf tones are
messed up. They seem to be doubled, that is a "1" becomes "11". 

But on ld calls (DAHDI > SIP) dtmf works! And I tried calling a local
number that didn't work over PSTN.



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 (0127612) sruffell (administrator) - 2010-10-02 17:06
 https://issues.asterisk.org/view.php?id=18084#c127612 
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I looked at the audio, and see what you mean.  I see that each DTMF appears
to be about ~170ms in total length, and there are two ~35ms gaps in each
digit.  What is also strange is that the first gap is completely silent. 
I.e.  either it's not coming from an FXS port or something like DTMF mute
is kicking in.

If it's not too much trouble, could you also take another two recordings
(can just be a few DTMF digits), one being 'dahdi_monitor <fxs port> -r
inbound.raw' at the same time 'dahdi_monitor 4 -t outbound.raw'? 

Issue History 
Date Modified    Username       Field                    Change               
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2010-10-02 17:06 sruffell       Note Added: 0127612                          
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