Technical information

Automated Attendant
7-6 Issue 7 June 2001
Prevent Calls to Certain Numbers
If some menu options transfer to locations off-premises, you can still protect the
system from unauthorized calls. You can restrict calls to certain area codes and/or
country codes, and even to specific telephone numbers.
For DEFINITY ECS and DEFINITY G1 and G3:
 On the Class of Restriction form for the automated attendant ports, enter y
in the Restricted Call List field.
 On the Toll Analysis form, specify phone numbers you want to prevent
automated attendant callers from dialing.
For DEFINITY G2:
 For DEFINITY G2.2, send disallowed destinations to action object “0.” Do
not use
PROC314 to mark disallowed destinations with a higher FRL
value.
PROC314 WORD1 assigns a Virtual Nodepoint Identifier to the
restricted dial string.
PROC317 WORD2 maps the VNI to the pattern, and
PROC317 WORD2 shows the pattern preference, with the FRL in field 4.
For earlier releases, use
PROC313 to enter disallowed destinations in the
Unauthorized Call Control table.
Allow Calling to Specified Numbers
A reverse strategy to preventing calls is to allow outbound calls only to certain
numbers. For DEFINITY G1 and System 75, you must specify both the area code
and the office code of the allowable numbers. For G3, you can specify the area
code or telephone number of calls you allow.
For DEFINITY G1 and System 75:
 Use change ars fnpa xxx to display the ARS FNPA Table, where xxx is
the NPA that will have some unrestricted exchanges.
 Route the NPA to an RHNPA table (for example, r1).
 Use change rnhpa r1: xxx to route unrestricted exchanges to a pattern
choice with an FRL equal to or lower than the originating FRL of the voice
mail ports.
 If the unrestricted exchanges are in the Home NPA, and the Home NPA
routes to
h on the FNPA Table, use change hnpa xxx to route unrestricted
exchanges to a pattern with a low FRL.
NOTE:
If assigning a low FRL to a pattern preference conflicts with requirements for
other callers (it allows calls that should not be allowed), use ARS partitioning
to establish separate FNPA/HNPA/RHNPA tables for the voice mail ports.