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Summary:DAHLIN-00275: E1 spans have noise on some alternative channels when VPM is active
Reporter:Shaun Ruffell (sruffell)Labels:
Date Opened:2012-01-09 14:38:43.000-0600Date Closed:2012-04-03 16:21:40
Priority:MajorRegression?Yes
Status:Closed/CompleteComponents:wct4xxp
Versions:2.6.0 Frequency of
Occurrence
Constant
Related
Issues:
duplicatesDAHLIN-00266 ISDN resets after upgrade to DAHDI 2.5.0.2
is duplicated byDAHLIN-00287 EchoCanceler do one way noise
Environment:Attachments:( 0) 0001-wct4xxp-VPM-module-creates-noise-on-alternate-channe.patch
Description:This was reported on the asterisk-users mailing list in the following post:
http://thread.gmane.org/gmane.comp.telephony.pbx.asterisk.user/266200
Comments:By: Shaun Ruffell (sruffell) 2012-01-09 14:51:39.278-0600

Attaching 0001-wct4xxp-VPM-module-creates-noise-on-alternate-channe.patch which resolves the issue in quick tests. Need to run it on some other cards before rolling it out.

This can be applied directly from a dahdi-linux source directory like:
{{curl "https://issues.asterisk.org/jira/secure/attachment/42095/0001-wct4xxp-VPM-module-creates-noise-on-alternate-channe.patch" | patch -p1}}

By: Olivier Krief (okrief) 2012-01-10 10:51:30.039-0600

After applying this patch, this noise issue disappered from my Dahdi-2.6.0-enabled system.
How can I help to let this patch be merged into Dahdi ?

By: Shaun Ruffell (sruffell) 2012-01-10 11:36:57.852-0600

Thanks for testing it Olivier. No need to worry...this patch will be in a point release here as soon as more of the tests with different hardware combinations complete.

By: Andy Romano (andyromano) 2012-01-18 08:49:37.663-0600

tested the patch on my system (2 te420, 2 aex2400) - asterisk 1.8.8.1, dahdi 2.6.0 and pri 1.4.12 - resolved the noise issues i had after upgrading to 2.6.

By: Shaun Ruffell (sruffell) 2012-01-19 10:39:49.828-0600

This patch was committed on trunk in [r10414|http://svnview.digium.com/svn/dahdi?view=revision&revision=10414] and on the 2.6 branch in [r10416|http://svnview.digium.com/svn/dahdi?view=revision&revision=10416]. This will be rolled into a release here soon.

By: David Hajek (hajekd) 2012-02-29 15:23:43.278-0600

I confirm, this patch works and resolves cranky audio on dahdi 2.6.0

By: Shaun Ruffell (sruffell) 2012-04-03 16:21:40.657-0500

This was committed onto the 2.6 branch in [r10416|http://svnview.digium.com/svn/dahdi?view=revision&revision=10416] and will be in 2.6.1.