I didn't try with stereo 44100Hz, I tried  simple g711 calls to Verizon cell phones and it didn't trigger the beep, when calling a voicemail on another freeswitch box it did detect the beep.

On Mon, Mar 21, 2016 at 9:27 AM, Piotr Gregor <piotrek.gregor@gmail.com> wrote:

Hi Abaci,

back to your problems with Verizon voicemail - the cause of them is:

1. Audio is stereo

2. Audio is sampled at 44100Hz

3. DESA algorithm used in avmd is very sensitive to noise

If you resample audio to 8000Hz and set avmd module to 8000Hz bit rate

or leave it at 44100Hz but adjust avmd to 44100Hz while always properly

handling number of channels (mono/stereo/...) then results are good.

Avmd module in current form is unable to meet these requirements,

but I am going to add the support for this.

cheers,

Piotr

_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
consulting@freeswitch.org
http://www.freeswitchsolutions.com

Official FreeSWITCH Sites
http://www.freeswitch.org
http://confluence.freeswitch.org
http://www.cluecon.com

FreeSWITCH-users mailing list
FreeSWITCH-users@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
http://www.freeswitch.org

_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
consulting@freeswitch.org
http://www.freeswitchsolutions.com

Official FreeSWITCH Sites
http://www.freeswitch.org
http://confluence.freeswitch.org
http://www.cluecon.com

FreeSWITCH-users mailing list
FreeSWITCH-users@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
http://www.freeswitch.org