This command has no arguments or keywords.
To enable callback security, use the dialer callback-secure interface configuration command. This command ensures that the initial call is always disconnected at the receiving end and that the return call is made only if the username is configured for callback. If the username (hostname in the dialermap command) is not configured for callback, the initial call stays up and no return call is made.
� Cisco Systems, Inc. 2001, 2002, 2003
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