Filter Configuration
About Filtering
The Prestige uses filters to decide whether or not to allow passage of a data packet and/or to make a call over the ISDN line. There are three types of filters involved: incoming data filters, outgoing data filters, and call filters. Data filters screen the data to determine if the packet should be allowed to pass. Call filters are used to determine if a call should be placed.
Outgoing packets must pass through the data filters before they encounter the call filters. Call filters are divided into two groups: default call filters and
Figure 10-1 Outgoing packet filtering Process
94 Filter Configuration
