This may be of help: http://lists.freeswitch.org/pipermail/freeswitch-users/2010-March/055505.htm... Moises Silva Senior Software Engineer Sangoma Technologies Inc. | 50 McIntosh Drive, Suite 120, Markham ON L3R 9T3 Canada t. 1 905 474 1990 x 128 | e. moy@sangoma.com On Sat, Jun 26, 2010 at 8:57 PM, Jeroen C. van Gelderen < jeroeng@thegreek.com> wrote:
Hi everybody,
I have a feeling I must be missing the obvious...
I've been trying to get echo canceling to work with Freeswitch/FreeTDM/DAHDI but I have been failing miserably for days. When I enable echo cancellation (MG2 or OSLEC) on a DAHDI/FreeTDM channel (FXS or FXO) that channel goes silent.
In absence of better suggestions I was hoping to replicate someone's "known working" configuration. Is anyone successfully running the following combination:
- any x86 hardware - any recent flavor Linux - any recent version of DAHDI using FXO ports - FreeSwitch/FreeTDM trunk from git - OSLEC echo canceller (or MG2) - (BONUS:) Xorcom Astribank with FXO/FXS ports.
I addition to much Googling I've tried most permutations of: - CentOS 5.4, 5.5, Ubuntu 10.04 LTS, Elastix - x86 and x64 single and multicore CPUs. - Non-PAE kernels for 32-bit installs. - DADHI from SVN (or -in case of Elastix- the built-in 2.2.0.2) - MG2 and OSLEC echo cancellers - Freeswitch from Git trunk
In each case everything configures fine to the point that Asterisk 1.6 will function with echo cancellation enabled. So we know that DAHDI layer works. But Freeswitch channels go silent when echo cancellation is enabled.
Puzzled, -Slim
-- Jeroen C. "Slim" van Gelderen
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