Comment 5 for bug 506210

I tried the tip in http://wiki.openvox.cn/index.php/OSLEC_Softecho_Module_Installation_for_DAHDI that said for DAHDI 2.5.0+, to uncomment this line in the source file linux/drivers/dahdi/Kbuild:
     obj-m += dahdi_echocan_oslec.o //enable this
I did so and did a remove/build/install of the dahdi dkms modules, but it still doesn't let the oslec module load. :-(

I finally tired of chasing it down, and used the mg2 canceller for now.