Avaya Communication Manager Administrator's Manual page 392

Enhancing System Security
13. If you require international calling, on the
page 669, use only the 011+ country codes/city codes or specific dial strings.
14. Assign all trunk groups or same trunk group types a unique Class of Restriction. If the trunk
group does not require networking through Communication Manager, administer the Class
of Restriction of the trunk group where the FRL is 0, the Calling Party Restriction field is
outward, and all unique Class of Restriction assigned to your outgoing trunk groups are n.
See Class of Restriction
Tip:
You can use the list trunk-group print command to have a printout of all
Tip:
your trunks groups. Then, you can use the display trunk-group x
command (where x is the trunk group) to check the COR of each trunk group.
15. For your AUDIX, on the System Appearance screen, set:
the Enhanced Call Transfer field to y.
●
the Transfer Type field to enhanced. If set to basic, set the Transfer Restriction field
●
to subscribers. See
information.
Note:
The COR of the voice mail ports dictates the calling restrictions of the voice mail.
Note:
If the above settings are not administered correctly, the possibility exists to
complete a transfer to trunk access codes or ARS/AAR feature codes for
fraudulent purposes. Never assign mailboxes that begin with the digits or trunk
access codes of ARS/AAR feature access codes. Require your users to use a
mailbox password length greater than the amount of digits in the extension
number.
16. Avaya recommends you administer the following on all voice mail ports:
Assign all voice mail ports a unique COR. See
●
information.
If you are not using outcalling, fax attendant, or networking, administer the unique COR
●
where the FRL is 0, the Calling Party Restriction field is outward, and all unique trunk
group COR on the Calling Permissions are n. See
more information.
Note:
Avaya recommends you administer as many layers of security as possible. You
Note:
can implement Step 9 and Step 16 as a double layer of security. In the event that
the voice mail system becomes unsecured or compromised for any reason, the
layer of security on Avaya Communication Manager takes over, and vice versa.
392 Administrator Guide for Avaya Communication Manager
AAR and ARS Digit Conversion Table
on page 767 for more information.
Feature-Related System Parameters on page 927 for more
Class of Restriction on page 767 for more
Class of Restriction
on
on page 767 for