Technical information

Large Business Communications Systems
4-36 Issue 7 June 2001
Restrict Calls to Specified Area Codes
If your business does not make calls to certain area codes, you can prevent users
from entering numbers within those area codes.
For DEFINITY G1 and System 75: See ‘‘Allow Calling to Specified Numbers’’ on
page 4-36.
For DEFINITY ECS and DEFINITY G3:
 Enter change ars analysis to display the ARS Analysis screen.
 Specify the telephone numbers in the Dial String field that you do not want
dialed. Either leave the field blank, enter
den (for deny) in the routing
pattern, or use a pattern that contains a high FRL.
 Disable TAC dialing (see ‘‘Disable Direct Access to Trunks’’ on page 4-38).
For DEFINITY G2.1 and System 85:
 Enter PROC311 WORD1 to send calls for specific area codes to route
pattern 1.
For DEFINITY G2.2:
 Enter PROC314 to route calls for specific area codes to VNI 0.
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 DEFINITY ECS and
DEFINITY G3, you can specify the area codes or telephone numbers of calls you
allow.
For DEFINITY G1 and System 75:
 Enter change ars fnpa xxx, where xxx is the area code, to display the
ARS FNPA Tables screen.
 Assign RHNPA table r1-r32 to the area code. For example, enter change
ars fnpa r1:
, where r1 is NXX.
For DEFINITY ECS and DEFINITY G3:
 Enter change ars analysis to display the ARS Analysis screen.
 Enter the area codes or telephone numbers you want to allow and assign
an available routing pattern to each of them. Remote HNPAs can also be
used.