- Call cost using CallThru system
CallThru call cost (so-called "direct call") can be calculated by summing up costs of its two "legs" (Leg A and Leg B).
CallThru call system:
Pic. 1
What does this call cost? First of all, you need to know exactly the country where the call is originated from and the place it is launched to as there are different conditions set for different countries; and sometimes CallThru cannot be supported in certain districts. The next thing, you need to properly sum up costs of all call parameters.
Calculation formula: A Leg + B Leg + 0.02 EUR (Tottoli GSM Fee).
Let's count the call cost. For example, the call is originated from the United Kingdom (London) and is terminated in Italy (Rome). So, let's get started. To calculate the cost of first Leg
* Operators highlighted with green color display operators that support CallThru calls.
** There is an upper limit to the cost of a CallThru call. Calls with Leg A cost higher that 0.0501EUR will be banned by the system. These calls can be done according to special rules.
We see that a CallThru in United Kingdom is available only through O2 Ltd carrier, and the cost of the first Leg is 0.0501 EUR / min.
In the blank field, you need to enter the phone number or country code (city) where the call is terminated, in our case we call to Rome, Italy code +39, area code 6.
Foreign tariffs in most cases are calculated through 1 channel, in this case the second Leg is 0.0889 EUR / min.
According to the formula above, it is necessary to make a sum of all parameters.
The cost of a call from United Kingdom to Italy is 0.159 EUR / min ( 1 Leg 0.0501 EUR + 2 Leg 0.0889 EUR + Network's Fee 0.02 EUR).
- Cost of CallBack calls.
Call cost via CallBack system also consists of two "Legs" (Leg A and Leg B).
CallBack call scheme:
Pic. 2
How to calculate the cost of this call? First of all, it is also necessary to know exactly which country is originating and which is terminating the call. Secondly, it is required to correctly sum up all the components together.
Calculation formula: (1 "Leg" + 2 "Leg" + 0.02 EUR (Tottoli GSM Fee)) * minutes + 0.075 EUR (allocation of MSRN to the session (one-off fee, regardless of the duration of the call)).
Let's calculate the cost of the same call, made from the United Kingdom O2 Ltd to Italy (Rome) via CallBack.
To determine the cost of the first leg, enter the country code originatig the call (in our case it is United Kingdom) in empty field.
United Kingdom tariffs in most cases are calculated through channels 1 and 10, in our case the first leg is 0.0928 EUR / min.
To calculate the second leg one needs to put the destination country code in a blank field (in our case, Italy (Rome)).
As foreign tariffs are calculated by the 1st channel, then the cost of the second leg will be 0.0889 EUR / min.
According to the formula above, it is necessary to make a sum of all parameters.
The cost of a call from the United Kingdom to Italy via CallBack is:
1 min. – 0,351 EUR
3 min. – 0,754 EUR
10 min. – 2.16 EUR