No I don't have any idea of what the octasic chip does exactly when that setting is enabled. Nenad disabled that setting by default starting with driver 3.5.11 since indeed was related to many fax problems. 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 Fri, May 14, 2010 at 9:22 AM, Steve Underwood <steveu@coppice.org> wrote:
Hi Moises,
Do you know exactly what the noise reduction does? In an echo canceller context I can see a couple of possibilities. I think all of them are pretty horrible for what they might do to modem signals. Maybe this has something to do with why so many people have problems with both Sangoma and Digium boards that use the Octasic echo cancellers.
Steve
On 05/13/2010 03:47 AM, Moises Silva wrote:
Sorry, the setting should be under [wanpipex] in wanpipex.conf file and NOT in the [wxgx] section.
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 <mailto:moy@sangoma.com>
On Wed, May 12, 2010 at 3:40 PM, Moises Silva <moises.silva@gmail.com <mailto:moises.silva@gmail.com>> wrote:
It is implemented and should work as a work-around.
Having said that, I suggest you to contact Sangoma support (techdesk@sangoma.com <mailto:techdesk@sangoma.com>), the ec chip should detect fax tone and disable its echo-canceling functions. However, some old versions of the driver have a noise-reduction feature enabled by default which also happen to disrupt faxes.
Try adding this just below TDMV_HWEC=YES option:
HWEC_NOISE_REDUCTION_DISABLE=YES
Or upgrade to the latest driver which does this automatically.
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