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

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=13562 
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Reported By:                biohumanoid
Assigned To:                
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Project:                    DAHDI-linux
Issue ID:                   13562
Category:                   dahdi (the module)
Reproducibility:            have not tried
Severity:                   feature
Priority:                   normal
Status:                     new
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Date Submitted:             2008-09-26 04:27 CDT
Last Modified:              2008-09-27 01:50 CDT
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Summary:                    [patch] It's necessary to have low frequency 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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 (0092901) biohumanoid (reporter) - 2008-09-27 01:50
 http://bugs.digium.com/view.php?id=13562#c92901 
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http://svn.astfin.org/software/oslec/trunk/spandsp-0.0.3/src/echo.c
See echo_can_hpf_tx

This patch will to make OSLEC as a module (without any patches to DAHDI). 

Issue History 
Date Modified    Username       Field                    Change               
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2008-09-27 01:50 biohumanoid    Note Added: 0092901                          
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