Specific Codec Policy

Hi guys,

I was wondering how can we trigger a specific codec-policy for some numbers.

The idea is that one of our provider support fax in 2 ways:

1. G711 Fax Pass-through if the initial offer is G711
2. T38 if the initial offer is G729

I can add and put first G729 for all calls but i would like to keep G711 for normal calls and G729 for faxes because G711 Fax Pass-through is very sensitive to delays/noise etc and fails from time to time.

I know that codec-policy is for Realms and SA but in this case are the same for a normal call and a fax call.