Basically you'll get new CDR records for the loopback side of the call. So you may have to reconcile the two -- depends on how you process your CDRs.  If you can avoid loopback, do so.  In this case, doing nibblebill on the a-leg is the right way to go unless you have a specific reason to nibble on the b-leg.

On Sun, Mar 14, 2010 at 1:38 PM, Alfredo Quiroga-Villamil <lawwton@gmail.com> wrote:
Thanks Rupa, We have looked at the loopback as an option and really
like the idea, the only thing there is that the wiki page says:

"Please take extra precautions in regard to CDR records. They may not
display the information you are looking for after a call has been
bridged through the loopback endpoint."

We are not quite sure what that statement translates to as far as what
fields from the CDR will be affected, etc...

On Sun, Mar 14, 2010 at 2:20 PM, Rupa Schomaker <rupa@rupa.com> wrote:
> Rather than going straight to the conference, you could go through loopback
> and have a dialplan that sets the vars and then executes the conference.
>
> On Sun, Mar 14, 2010 at 12:06 PM, Alfredo Quiroga-Villamil
> <lawwton@gmail.com> wrote:
>>
>> All:
>>
>> We are currently exploring the possibility of using mod_nibblebill and
>> integrating it with a conference. It seems like it offers all the
>> features and more that we need. The way we create a conference now is
>> as follows:
>>
>> originate sofia/gateway/url/XXXXXXXXXXX
>> &conference(myConf+flags{moderator,wait-mod})
>>
>> >From the mod_nibblebill wiki page it seems like we need to set a few
>> variables for the B leg:
>>
>> enable_heartbeat_events
>> nibble_rate
>> nibble_account=
>>
>> I was wondering if there is a way to set these variables via the API
>> call shown above where the conference is created. If not, what options
>> do you recommend to accomplish this?
>>
>> Thanks in advance,
>>
>> Alfredo
>>
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>
>
>
> --
> -Rupa
>
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--
-Rupa