AASTRA DT4x2 for BusinessPhone User Guide EN - Manual (Page 82)

Other Useful Features
BusinessPhone – Cordless DT412/DT422/DT432 82
Least Cost Routing
Least Cost Routing (LCR) automatically selects the cheapest way
to establish the connection to the desired external number. Please
ask your system administrator if this function is installed in your
system.
If the extension has been configured to use LCR, each external call
will be analysed and the cheapest routing will be selected.
Use Least Cost Routing æ
Press.
0 å
Dial the digit(s) for external call access and the external
number.
The usual way of making an outgoing external call.
Note: Which digit to press for external line access depends
on the configuration of the system.
Calling Least Cost Routing
If LCR has been installed in your system, but your extension is not
configured to use it automatically, you also have the opportunity to
get the cheapest connection by dialling the LCR code before you
dial an external number. æ
Press.
å
Dial the LCR code.
Please ask your system administrator for the LCR code.
0 å
Dial the digit(s) for external call access and the external
number.
Note: Which digit to press for external line access depends
on the configuration of the system.