Bug 268652

Summary:	chan_dahdi.c:2010 dahdi_enable_ec: Unable to enable echo cancellation on channel 4 (No such device)
Product:	Gentoo Linux	Reporter:	Mark Seamans <mark>
Component:	Current packages	Assignee:	Tony Vroon (RETIRED) <chainsaw>
Status:	RESOLVED FIXED
Severity:	major	CC:	jay, voip+disabled
Priority:	High
Version:	unspecified
Hardware:	AMD64
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Mark Seamans 2009-05-04 19:31:48 UTC

I moved to asterisk 1.6.0.6 with dahdi 2.1.0.4 a few months ago.  Using the TDM4xx card, no hw echo cancelation.  I use this system at my house (6 polycom phones) for testing. Having issues with Echo Cancelation:  chan_dahdi.c:2010 dahdi_enable_ec: Unable to enable echo cancellation on channel 4 (No such device)

from /etc/dahdi/system.conf

loadzone = us
defaultzone=us
fxoks=1
fxoks=2
fxoks=3
fxsks=4
echocanceller=mg2,4


dahdi_cfg -c system.conf -d 9 -f -x:  DAHDI_ATTACH_ECHOCAN failed on channel 4: Invalid argument (22)

Card:  WCTDM/0 "Wildcard TDM400P REV I Board 1" -No Hardware Echo Cancelation

Reproducible: Always

Steps to Reproduce:
1. Changed to different cancellers
2. Ensured config file correct
3. chan_dahdi.conf is set correct.

Actual Results:  
make a outgoing call / receive call, bad internal echo.  ie:  remote caller cannot hear the echo.  However, local has bad echo.  ie:  I call my Wife via asterisk.  I hear myself (even with low volume), she says all is fine.
chan_dahdi.c:2010 dahdi_enable_ec: Unable to enable echo cancellation on channel 4 (No such device)

Expected Results:  
Ehco goes away would be nice.  I have a iax trunk that works fine.

Comment 1 Jay Pfeifer 2009-05-07 17:32:53 UTC

This bug is because the dahdi ebuild doesn't build the echo canceler modules. The emake in the src_compile should be changed to all instead of modules...

Comment 2 Mark Seamans 2009-05-07 17:39:24 UTC

Confirmed, working.  Thanks.

Comment 3 Tony Vroon (RETIRED) gentoo-dev

2009-10-22 18:19:23 UTC

+*dahdi-2.2.0.2 (22 Oct 2009)
+
+  22 Oct 2009; <chainsaw@gentoo.org> +dahdi-2.2.0.2.ebuild,
+  +files/dahdi-2.2.0.2-driver_data-2.6.32.patch,
+  +files/dahdi-2.2.0.2-gcc44-hack.patch,
+  +files/dahdi-2.2.0.2-includes.patch,
+  +files/dahdi-2.2.0.2-net-device-ops.patch,
+  +files/dahdi-2.2.0.2-no-depmod.patch:
+  Version bump, closes bug #286829 by Jeremy Johnson. Build all target
+  instead of modules target so echo cancellation becomes available, as
+  suggested by Jay Pfeifer in bug #268652. Ported to 2.6.32 kernels (release
+  candidate 5 at the time of writing), filed upstream bug. Quick hack for
+  GCC4.4 compilation.