AudioCodes Mediant 4000 SBC User Manual page 276

CHAPTER 16 Services
Cost Group
1. "A"
2. "B"
● The Cost Groups are assigned to routing rules:
Routing Index
1
2
3
4
The device calculates the optimal route in the following index order: 3, 1, 2, and then 4, due to
the following logic:
● Index 1 - Cost Group "A" has the lowest connection cost and minute cost
● Index 2 - Cost Group "B" takes precedence over Index 4 entry based on the first-matched
method rule
● Index 3 - no Cost Group is assigned, but as the 'Default Call Cost' parameter is configured
to Lowest Cost, it is selected as the cheapest route
● Index 4 - Cost Group "B" is only second-matched rule (Index 1 is the first)
■ Example 3: This example shows how the cost of a call is calculated if the call spans over
multiple time bands:
Assume a Cost Group, "CG Local" is configured with two time bands, as shown below:
Cost Group
CG Local
TB2
Assume that the call duration is 10 minutes, occurring between 16:55 and 17:05. In other
words, the first 5 minutes occurs in time band "TB1" and the next 5 minutes occurs in "TB2", as
shown below:
The device calculates the call using the time band in which the call was initially established,
regardless of whether the call spans over additional time bands:
Total call cost = "TB1" Connection Cost + ("TB1" Minute Cost x call duration) = 2 + 1 x 10 min
= 12
Connection Cost
2
6
Dest Phone Prefix
201
201
201
201
Time Band Start Time
TB1 16:00
17:00 18:00
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Mediant 4000 SBC | User's Manual
1
3
Destination IP
x.x.x.x
x.x.x.x
x.x.x.x
x.x.x.x
End Time Connection Cost
17:00 2
7 2
Minute Cost
Cost Group
"A'
"B"
0
"B"
Minute Cost
1