Difference between revisions of "LCR Logic"

Latest revision as of 12:53, 15 May 2010

Here simple LCR (Least Cost Routing) is explained.

We have two providers, A and B.

The dialed destination is 921XXXXXXXXXX.

Provider A has the following rate for the prefix (destination):

No other destination starts with 92.

Provider B has the following rates for prefixes:

So LCR in MOR will group these providers in the following order:

MOR first dials through Provider A. If the call fails, Provider B will be used to send the call.

If the call through Provider A is ANSWERED, BUSY or there's NO ANSWER, the call ends, and Provider B is not used.

Provider B is used ONLY when the call fails through CONGESTION.

The following graphic illustrates LCR logic:

@@ Line 1: / Line 1: @@
-Here simple LCR (Least Cost Routing) e.g. by price is explained in example:
+Here simple LCR (Least Cost Routing) is explained.
-=== Example ==
+== Example ==
-We have 2 providers A and B.
+We have two providers, A and B.
-Dialed destination is 921XXXXXXXXXX
+The dialed destination is 921XXXXXXXXXX.
-Provider A has such rates for prefixes(destinations):
+Provider A has the following rate for the prefix (destination):
 * 92 rate 0.1
-No other destination starts with 92
+No other destination starts with 92.
-Provider B has such rates for prefixes:
+Provider B has the following rates for prefixes:
 * 92 rate 0.05
 * 921 rate 0.2
-So LCR in MOR will group this providers in following order:
+So LCR in MOR will group these providers in the following order:
 * Provider A with rate 0.1 (92)
 * Provider B with rate 0.2 (921)
-It first dials through Provider A, if call fails, Provider B will be used to send the call.
+MOR first dials through Provider A. If the call fails, Provider B will be used to send the call.
-If call is ANSWERED, BUSY or there's NO ANSWER - then call ends. And Provider B is not used.
+If the call through Provider A is ANSWERED, BUSY or there's NO ANSWER, the call ends, and Provider B is not used.
-It is used ONLY when call fails - CONGESTION.
+Provider B is used ONLY when the call fails through CONGESTION.
-In following schema LCR logic is presented in graphical way:
+The following graphic illustrates LCR logic:
 [[Image:lcr_logic.png]]