Security
7-7
Enabling CNA
To enable CNA, select
Calling Number Authentication
in the Default
Answer Profile screen and choose one of the following settings:
■
Ignored
: CNA is not in effect. This is the default setting.
■
Preferred
: Authentication is attempted if the calling number is
available. If authentication fails, or the calling number is not
available, the call proceeds as usual and the caller may still
connect successfully. Use this setting if you expect to receive
both regular and CNA-authenticated calls.
■
Required
: Authentication is attempted if the calling number is
available. If authentication fails, or the calling number is not
available, the Netopia ISDN Router disconnects the caller. Use
this setting if you require all calls to be CNA-authenticated.
Configuring a connection profile for CNA
To configure a connection profile for CNA, select
Calling Number
in
the Add Connection Profile screen or the Change Connection Profile
screen and enter the calling number associated with the connection
profile’s destination site. The
Calling Number
item does not appear
and is not in effect if the connection profile is set to
Dial Out Only
(see the
Dial On Demand
item in the Telco Options screen,
page 2-31
).
The calling number may not be the same as the number found in the
Number to Dial
item. If you are unsure of the correct calling number
to use, follow these steps to find it:
1.
Select
Calling Number Authentication
in the Default Answer
Profile screen and choose
Required
.
2.
Request a call to the Netopia ISDN Router from the site whose
calling number is needed.
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