[asterisk-bugs] [DAHDI-linux 0013562]: [patch] It's necessary to have high pass filter for tx signal of DAHDI.

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=13562 
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Reported By:                biohumanoid
Assigned To:                sruffell
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Project:                    DAHDI-linux
Issue ID:                   13562
Category:                   dahdi (the module)
Reproducibility:            have not tried
Severity:                   feature
Priority:                   normal
Status:                     confirmed
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Date Submitted:             2008-09-26 04:27 CDT
Last Modified:              2009-06-04 10:57 CDT
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Summary:                    [patch] It's necessary to have high pass filter for
tx signal of DAHDI.
Description: 
It's necessary to have low frequency filter for tx signal of DAHDI. 
Otherwise, low-frequency signal from IP can reach a leased line, and
return back with nonlinear distortions. This will break an echo canceller.

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 (0105992) sruffell (administrator) - 2009-06-04 10:57
 https://issues.asterisk.org/view.php?id=13562#c105992 
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This would also allow the semantics to more naturally map to "echocans can
preprocess the tx audio in anyway they want to improve their operation". 

Issue History 
Date Modified    Username       Field                    Change               
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2009-06-04 10:57 sruffell       Note Added: 0105992                          
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