SEssion Manager and AAEP with no available ports

[wawior]

Hello,

I've got SM connected to AAEP which is licensed for 20 ports.
I'm not an expert in SM.

Is it possible to set such rule on SM in which it finds out that there is 21st call and it need to be redirected somewhere else, eg to another trunk?

Accually, in that case AAEP rejects such 21st call.How can we handle it on SM?

Thanks

Regards
Michal