View source for LCR/Tariff change based on call prefix

=== Example ===

Lets say we have a provider that provides three quality routes: bad-cheap/normal/good-expensive.

* The bad-cheap route is selected when dialing an E.164 number with prefix 00.
* The normal route is dialed when dialing the normal E.164 number.
* The good-expensive route is selected when dialing the E.164 number with the prefix 000.

To accomplish this, we need to:

* Create three providers with the same connection settings:
** Bad_Provider
** Normal_Provider
** Good_Provider

* Create three Tariffs for providers:
** Provider_Tariff_Bad
** Provider_Tariff_Normal
** Provider_Tariff_Good
* Enter/Import appropriate rates to these Tariffs.
* Assign these Tariffs to providers.

* Create three LCRs and assign appropriate providers:
** Bad_LCR - assign Bad_Provider here
** Normal_LCR - assign Normal_Provider here
** Good_LCR - assign Good_Provider here

* Create three Tariffs for users:
** User_Tariff_Bad
** User_Tariff_Normal
** User_Tariff_Good
* Enter/Import appropriate rates to these Tariffs.

* Create Location BadNormalGood with the following Rules:

[[Image:lcr_tariff_by_prefix_localization.png]]

* Assign User_Normal_Tariff and Normal_LCR to User.
* Assign all the user's devices to Location BadNormalGood.

That's it.

Now when the user dials E.164 numbers, he will be using the normal route; when 00, the bad route; and when 000, the good route.