Dialling restrictions schemes are designed to determine whether a poll is currently valid (i.e. it initiates 'phone call) for a particular dial-up line or not. Each dial-up line has its own restriction scheme; however, several lines could use one restriction scheme.
Before polling from a particular dial-up line, Argus checks whether the poll is valid according to the line›s Required and Forbidden groups; the call is initiated only if the poll is valid according to both condition groups for that line.
Scheme name - name of restriction scheme (as it appears in a line Restriction scheme combo box)
Required - necessary conditions for a poll to be valid.
Forbidden - conditions making a poll invalid.
Three condition types are implemented in the current version of Argus: address mask (possibly with Regular Expressions), Nodelist flags and the beginning of a 'phone number (usually 10 or 11 digits).
Conditions in each group are divided with a space character.
Items within a row are combined with logical AND operation, rows within a grid are combined with logical OR operation.
For example:
Required | +7-095- CM 2:50*/* HST |
Call a node only if its 'phone number starts with +7-095- and it has CM and HST Nodelist flags and the node is in Region 50 of Zone 2 |
Forbidden | 2:5020/666.* +7-095-212- ISDN |
Don›t call a node if it and its boss has a node number 2:5020/666 and its 'phone number starts with +7-095-212- and it has PEP and ISDN Nodelist flags |