ISDN caller identification callback features
ISDN caller identification callback delivers the following features:
In the ISDN caller identification callback applications, the callback server can process an incoming call in one of the following ways, depending on the result of matching the dial-in number against numbers configured in dialer call-in commands at the local end:
Deny the incoming call—If one or multiple dialer call-in commands exist, but no match is found.
Accept the incoming call—If the dial-in number matches a dialer call-in command without the callback keyword or if no dialer call-in command exists.
Call back—If the dial-in number matches a dialer call-in command with the callback keyword.
Dial-in numbers are matched against numbers configured in dialer call-in commands starting with the right-most character. In addition, asterisks (*) are used as wildcards to match any character. If a dial-in number matches multiple dialer call-in commands, the best match is selected in the following order:
The one with the fewest asterisks (*).
The one that is found first.
At the server end, identify the dialer call-in commands matching incoming calls.
In C-DCC, upon receipt of an incoming call, the server compares the incoming number against the dialer call-in commands configured on the physical dialup interface or its corresponding dialer interface for a match.
In RS-DCC, upon receipt of an incoming call, the server compares the incoming number against the dialer call-in commands configured on the involved dialer interface for a match.