Block some Destination to User

If you need to block some special prefix (Destination), follow these steps:

1. Create empty LCR (without Providers in it) - "Empty LCR"
2. In LCR which is used by User use Call routing per destination basis to add prefix which you want to block
3. Assign "Empty LCR" to this prefix

Now when user will dial number with this prefix (Destination) - call will be routed to empty LCR which equals it will be dropped.