Technical information

Large Business Communications Systems
4-14 Issue 7 June 2001
Calling Party and Called Party Restrictions
For DEFINITY G3 systems prior to DEFINITY ECS Release 5, as well as for G1
and System 75 systems, the default value of the “Calling Party Restriction” field
on the COR form is “none.” Starting with DEFINITY ECS Release 5, the default
value of the field is “outward.” This default ensures that the ability to place calls
that access public network facilities is assigned only when appropriate.
The following restrictions can be placed on the originating station or trunk:
 Outward Restricted: cannot make Public Network Calls via AAR/ARS or
TACs. Calls can be placed to internal stations, to tie trunks via TACs, and
off-switch via the Uniform Dial Plan (UDP).
NOTE:
Some states require that all telephones be able to dial emergency
numbers, such as 911.
 Toll Restriction: cannot make toll calls unless the numbers are specified on
an unrestricted call list. For G3, you can specify if the restriction applies to
all toll calls or only TAC toll calls over CO/FX trunks.
NOTE:
The switch identifies all public network calls with 0 or 1 as the first or
second digit as toll calls. For G3, toll calls and private network calls
are defined on the Toll Analysis screen. For G2.2, only the first digit, 0
or 1, identifies it as a toll call.
 Code Restriction: for DEFINITY G1 and System 75, denies outgoing calls
to selected office and area codes administered in the code table.
 Fully Restricted: for DEFINITY ECS and DEFINITY G3, denies outgoing
calls, including dial access to trunks. Allows no incoming calls via Public
Network trunks. See also ‘‘Fully Restrict Service’’ on page 4-30.