First have you tried passthru_ptime_mismatch=true yet? It's not the default used by the passthrough mod_g729 codec.

Only one module can be loaded at a time to provide a given codec (ie mod_g729 or mod_com_g729 or mod_sangoma_codec). Internally perhaps the sangoma module would avoid licenses, but they would need to clarify. AFAIK mod_com_g729 only uses a license when required, simple 729-729 bridges still use passthrough, but I don't know how ptime affects that. It's be easy to test though - load it without any licenses and try a 729-729 call with differing primes and see it the call gets through.

-Steve

On Friday, May 31, 2013, Ashwin Rath wrote:

Thanks Anthony ,

Looks like we would need to purchase a G729 license for Freeswitch or use a Sangoma card. Is there some configuration which tells Freeswitch to use the card ( or the software codec ) only in case of a ptime mismatch  so that we could save on the licensing fee only for calls that actually need ptime conversion ?

On Tue, May 28, 2013 at 8:21 PM, Anthony Minessale <anthony.minessale@gmail.com> wrote:

Set the variable passthru_ptime_mismatch=true on both legs of the call.  That's the best we can do.  If that doesn't work you'll need licenses.

On Tue, May 28, 2013 at 9:12 AM, Ashwin Rath <ashwinrath@gmail.com> wrote:

Hi

I am trying to configure FS as a B2BUA which can do ptime conversions between the ingress and egress leg.

The question is, if both legs have G729 as the codec but ptime 20 on one and 30 on another, would i still need to get the licensed mod_com_g729 or can it work with the passthrough mod_g729. I already tried it out, but it doesnt seem to work.

Is there some configuration needed for this ?

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Ashwin Kumar Rath

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