Overview
Least-cost routing is the process of selecting a telecoms carrier on a trunk provided by another telecoms carrier. It is usually a four-digit code dialled before a number that instructs the telephone exchange to pass the call to another carrier, rather than carry it itself.
For example, if your lines are supplied by British Telecom, but you want to use a different carrier for certain calls, you can inform the British Telecom exchange not to connect those calls directly, but to route them to the other carrier network for them to connect the call. Although you are using a BT line from your premises to the exchange, the lines of the other carrier will be used from the exchange to the destination. Each carrier has its own access code which, when prepended to the dialled number, the BT line will recognise to which carrier the call has to be passed over.
A list of such access codes - along with the tariff table you wish to use to cost calls routed by this particular code - is contained in the LCR.cfg file, located within the main installation folder {app}\tim\config.
In the configuration presented below, a dialled number such as 166001615905900 would be routed to 01615905900 (Manchester) via the MCIWorldcom network.
 | We recommend to check first with our Technical Support team if you need to make any changes to the back-end files. |
Adding an LCR code
To add an LCR code, access the Setup screen from the top-left menu and click on the button.
Enter the code in the Prefix field, select the associated tariff from the drop-down list and click on the button. To apply the changes click on the button.