2N Omega series - VoIP manual v1.4 - Manual (Page 56)

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4.9. LCR Barred Numbers
The Barred numbers table (Blacklist) is searched for match after output
normalising and before call forwarding to the successfully found output line. If the
normalised number starts with a string included in the table, the call is rejected.
This means that we can enter both whole telephone numbers and prefixes into the
list to eliminate, e.g., all international calls or special high-rate calls (erotic lines,
etc.).
To define the barred numbers, use the Blacklist item in the Least Cost
Router (LCR) menu in the Telephony services group tag. A list of barred numbers
gets displayed.
The columns include:

Regular expression
– the barred number beginning (or the whole
barred number).

Description - any text that describes the meaning of an item.
Click on the symbol to move to the detail and change the settings. The
above-mentioned two fields are the only two items to be completed in the modifying
form.
To delete a barred number, use the symbol. Or, tick off the last table
column and click on Remove selected items.
There is an Add barred number icon below the table. Click on it to display the
number defining form.
4.10. LCR Testing
The LCR test item in the Least Cost Router (LCR) menu in the Telephony
services group tag is used for testing changes in the LCR settings. Enter the