M4 Blocked Rates
A Blocked Rate blocks a route to particular Destinations. In Tariffs, you are able to block a prefix (Destination) by setting "-1" or text "Blocked" instead of Price for chosen Destination.
Blocked Rates are useful when the Provider does not support some Directions or Destinations. Some Providers send a Rates Sheet with the word "Blocked" instead of Price, which means, that this Destination is blocked. M4 import rates from csv recognizes Blocked Rates by "-1" or text "Blocked" instead of Price.
Also, it can help you if you want to forbid some Directions and Destinations for End Users by yourself.
Let's say we have Destination with Prefix 37062 and Price "blocked" (or -1). All calls to 37062******* will be blocked.
Blocked rate checkbox
The functionality works in the same way as Blocked Rates. As a result, you would see the rate, and also it will be blocked.
Block/Unblock Rates from CSV
It is possible to block/unblock rates from the CSV file.
Please check how to import rates from CSV In M4.
In the second step of Import, you can choose a column for blocked or unblocked rates. Column values can be: block, blocked, unblock, unblocked.