In our bussiness wholesale it's only limited for Carrier2Carrier
bussiness and retail is everyone else.
We have prepaid and post-paid customers, all of them have no limit on
simultaneous calls, because at the end .. the more calls they send ..
the more money we earn, so it has no sense (for us) to limit an
account to only one simultaneous call.

this situation really make sense, restricting to one call per user is not worth

since the more usage is the more provider make the money

only concern from provider side is, how to restrict them the balance they have

this is big concern of all the providers, iam also digging the same issue.

can some one come across any solution, kindly post back it will be good to hear back.

await for the solution

DanB :-) i have look at the module created using yate, looks good asper the document.

may be if you add the option of mulitple calls would be good option.

I heard in some news OpenSIP and Yate working together ( this may be off Topic)

Ram